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The Fanatic Bib is the total package for ultra-quiet warmth, utilizing the most advanced sound-suppressing fabric in the hunting world. Built with a deadly silent Berber fleece face, GORE-TEX INFINIUM™ with WINDSTOPPER® Technology barrier for 100% windproof warmth, and PrimaLoft® Silver Hi-Loft Ultra Insulation that traps body heat. Mapped burr-resistant fabric on the leg and gusset prevents burr pickup along with low-bulk hems and full-length side zips provide easy on/off in the stand without having to remove your boots.
Product ID: #50225Men's
Sizing Guide
Jacket & Tops Sizing
Size | Chest | Sleeve |
---|---|---|
Small | 36 - 38" | 33" |
Medium | 39 - 41" | 34" |
Medium Tall | 39 - 41" | 36" |
Large | 42 - 45" | 35" |
Large Tall | 42 - 45" | 37" |
X-Large | 46 - 49" | 36" |
X-Large Tall | 46 - 49" | 38" |
2XL | 50 - 53" | 37" |
2XL Tall | 50 - 53" | 39" |
3XL | 54 - 57" | 38" |
Pant Sizing (Inches)
Size | Waist | Reg | Tall |
---|---|---|---|
30 | 30" | 31" | |
31 | 31" | 31" | |
32 | 32" | 31" | 33" |
33 | 33" | 32" | 34" |
34 | 34" | 32" | 34" |
35 | 35" | 32" | 34" |
36 | 36" | 33" | 34.5" |
37 | 37" | 33" | 34.5" |
38 | 38" | 33" | 34.5" |
40 | 40" | 33" | |
42 | 42" | 33" | |
44 | 44" | 33" |
Pant Sizing
Size | Waist | Reg | Tall |
---|---|---|---|
Small | 28 - 30" | 31" | |
Medium | 31 - 33" | 31" | 33" |
Large | 34 - 37" | 32" | 34" |
X-Large | 38 - 41" | 32" | 34" |
2XL | 42 - 45" | 32" | 34" |
3XL | 46 - 49" | 32" | 34" |
Equinox & Dakota Pant Sizing
Size | Waist | Reg | Tall |
---|---|---|---|
30 | 31" | 31" | |
32 | 33" | 31" | 33" |
34 | 35" | 32" | 34" |
36 | 37" | 32" | 34" |
38 | 39" | 32" | 34" |
40 | 41" | 32" | |
42 | 43" | 32" | |
44 | 45" | 32" |
Glove Sizing
Size | Palm Circ | Length |
---|---|---|
Medium | 8 - 8.5" | 7.5 - 8" |
Large | 9 - 9.5" | 8.5 - 9" |
X-Large | 9.5 - 10" | 9 - 9.5" |
2XL | 10 - 10.5" | 9.5 - 10" |
Gaiter Sizing
Size | Calf Circ | Boot Size |
---|---|---|
M/L | 17.5" | US 6-10" |
L/XL | 18.5" | US 10-14" |
How to Take
Your Measurements
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1. SLEEVE MEASURE
Bend your elbow and put your hand on your hip. Measure from the center of the back of your neck, along the shoulder and down the elbow to the wrist bone.
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2. CHEST SIZE
Take measurement under armpits, around fullest part of chest and shoulder blades.
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3. WAIST SIZE
Measure around where you normally wear your pants, keeping the tape measure a bit loose or putting one finger between your body and the tape measure.
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4. INSEAM
In a standing position,measure from your crotch to where you want your pants to end, breaking at the top of the shoe in the front and just above the heel in the back.
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5. GLOVES
With hand partially closed, measure over the knuckles, around the hand, excluding the thumb.
Fit Guide
SITKA Gear engineers gear with a specific Fit and intended end use in mind. These functional designs provide the user with authentic garments for the right situation.
Fit Descriptions
We can communicate our Fit descriptions in 3 different ways. Keep in mind that each garment will allow for layering in accordance to the garments place in a system and described Fit
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P/F
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S/F
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E/F
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P/F - PERFORMANCE FIT
Designed for minimal layering. Whether an early season piece or already insulated this garment fits to prevent inefficiencies in heat retention caused by dead space.
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S/F - STANDARD FIT
Designed to accommodate layering for more versatility from early to late season climates.
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E/F - EXPEDITION FIT
Designed for maximum layering in the worst conditions. Cut roomier to accommodate additional layering underneath.

GORE™ OPTIFADE™ Concealment Elevated II is designed for whitetail hunters in an elevated position.
Weight: 53.1 oz. // Size: L
Face Upper Body Fabric: High Loft Jacquard Berber Feece with DWR finish.
Face Lower Leg and Gusset Fabric: Polyester stretch fleece with DWR finish.
Liner: 2-layer GORE-TEX INFINIUM™ with WINDSTOPPER® Technology and polyester micro-grid fleece knit interior.
Interior Lower Leg Liner: 3-layer GORE-TEX with polyester knit interior and DWR finish
Torso Insulation: Mapped 120-gram PrimaLoft® Silver Hi-Loft Ultra Insulation.
Leg Insulation: Mapped 80-gram PrimaLoft® Silver Hi-Loft Ultra Insulation.
Science of Sound: The new Fanatic system allows a hunter the ability to move with more confidence by cutting the audible engagement distance in half.
Enhanced High-Loft Berber Fleece-Face: Provides excellent warmth and comfort.
Large Multi-Chamber Cargo Pockets with Silent Snaps: Provide stealthy access to gear, customized storage for a wind indicator or phone, and secure zippered storage.
Mapped burr-resistant textile on leg and gusset: Prevents burr pickup in key areas.
GORE-TEX INFINIUM™ with WINDSTOPPER®: Offers complete windproof protection through a durable, lightweight, and breathable membrane.
PrimaLoft® Technology: PrimaLoft® products are the ultimate in insulation technology for hunters. Ultra-fine fibers are engineered to retain maximum warmth even when wet.
Technology


Why We Made This
We saw the need for a late-season bib that could withstand cold days sitting in the stand while providing the most advanced visual and auditory concealment. Our approach was to design a bib that would protect you from not just the cold but the wind, while minimizing the noise created from layers of gear. Working with animal scientists and ungulate specialists and using controlled laboratory tests, we developed the warmest, quietest bib on the planet by utilizing a GORE-TEX INFINIUM with WINDSTOPPER® barrier sandwiched between Berber fleece face fabric and Primaloft® SIlver insulation. This updated fabric package is half the audible engagement distance as compared to our previous Fanatic line. Additionally, we incorporated compression-resistant insulation in the seat to create a shield from vital heat loss.
Complete the System
Product Comments
20 Reviews
Sat in the fanatic suit last week in -5 and a foot of snow. Shot my biggest buck to date. I never could sit in my old gear that long !!!
I finally got to use these the other day in the stand. The winds were approx 20mph and temp felt around high teens. With these bibs on and a some under layers, I had no idea the temp was actually what it was! I think I would’ve been fine with out an extra layer under the bibs that I wore, but it was the first time so I didn’t want to under dress. I’m very impressed! Just got the fanatic jacket to go with it. So we’ll see how these hold up as the temperature starts to drop! Overall so far, great product and quality, worth the money if you need cold weather clothes, and shipping is fast.
I've had these since late summer but couldn't use them until this past weekend in WI for bow hunting. Yesterday morning we had 40 mph winds with an actual temperature of 29 degrees. I had on some long johns, sweat pants, and these bibs and I didn't feel a thing. Also had the Fanatic Vest up top underneath my regular cold-weather jacket and was toasty all morning. Would have called it quits in my previous gear but I honestly couldn't feel any wind - to the point that it was unsettling. Stayed in the stand all morning and landed my first bow buck! Thanks Sitka for a great piece!
As with the Jacket, these bibs exceed expectations in every single way. I see no room for improvement. Paired with the equinox midi pant I sat in 15 degrees for hours without issue and I'm confident it could handle much lower temps.
Sitka got it right with these bibs.
They’re super warm, comfortable, and they vent GREAT for walk-ins to the stand. The pockets throughout them are clutch as well!
These were the first quality late season camo hunting bibs I had ever purchased. They kept me warm in the stand and gave me enough warmth to bag a late season buck with my bow last November. They do seem a little bulky. The biggest drawback I noticed is that they are so warm that you either have to pack them out to the stand or have the side zippers fully open if it's really cold to prevent from sweating. I do like the zippered legs for venting/heat regulation. Overall, a great product that is very quiet and keeps you in the stand longer during frigid northern WI winters.
Absolutely the quietest and warmest bibs I’ve ever owned. Especially like that the insulation doesn’t go all the way down the leg so they tuck inside my rubber boots easily.
Absolutely outstanding Bibs for Late season and extremely cold environments! I used these fanatic bibs during the Pa late deer season in 20 ° temperatures and was super warm! The bib type keeps my lower back area warm which in turn keeps my core warm. I highly recommend these Bibs for extreme temperatures below freezing! Pockets are well placed and useful!! Elevated II pattern kept me invisible to deer while on stand from a leafless elevated position!!
Excellent option for when the bitter temperatures hit. Side zippers extend all the way to the hips to make on/off hassle-free. Extremely quiet and provide excellent warmth on stand. Plenty of pockets to hold hunting necessities.
I love everything about the fanatic bibs except the elastic shoulder straps. I didn't realize they would get destroyed by the ozonics ozone generator. Not a good day for me. If you don't use ozone then the straps are awesome.
Bibs are great and I'll give them a four star only because I wish that they put a little more insulation in the lower leg area, and they didn't put a pocket at the top of the bib for like 'phone- map'- etc'
These bibs are EXACTLY what you need for the cold weather hunts. Pockets, zippers, even the suspender straps are perfect. I am a total obsessive person. I am always looking for a way to cut things out that aren't needed. These bibs ave allowed my wife and I to get rid of unwanted bulk layers. While also keeping us WARM. The pockets are PERFECT. With the exception of thr rage finder grunt tube pocket (On the jacket). Some attention needs to be put in there. The bibs do get wet, yet still managed to keep me quite warm in 27 degree weather and high wind. I would definetly recommend to my friends and family.
I have a question.. How are these in the rain? I’m waffling between this or the incinerator and can’t make up my mind
The fanatic bibs... Wear do I start with these babies. Being a freeze baby in ne Ohio I get cold easily. But I like to hunt a lot. So far this year the low has been 18 and wearing my heavyweight bottoms, stratus pants and these bibs, my lower half has not even gotten a chill. Super quiet, soft, pockets, I even asked my wife if they made my butt look big and she said no. Lol. Yes they are expensive, but yes they work. But don't make the mistake of thinking I'll just buy the bibs and coat and be warm... It's the whole system that works together to keep your warm. Also whatever size pants you wear in the ews, or stratus, or whatever... Continue with that same size as you proceed to the next layer. Sitka has taken that into consideration. When I'm all layered up, everything fits perfectly. But if I just put on the bibs or coat without the layers, they're big on me. If you want to hunt longer into the season, and you can afford it. Do it. I've never done a review before, but after getting thus whole system, I was so pleased that my wife said I needed to let other people know as well.
These bibs are phenomenal. They're warm and quiet. Spacious, but not baggy. if you could ever want a pocket, its there. Absolutely love them for cold sits in the saddle
The nicest piece of hunting apparel you will ever own. Yes Sitka gear is more expensive but it is seriously that much better; ever little detail is thought of. I am 6’6” 200 pounds and ordered an XL and was swimming in it, hassle free exchange for a large tall and that was perfect. I have fanatic bibs, coat, and hat and love them all!
SITKA Gear - 09.22.2019
Beyond the Layers - Athlete Jim Hole Jr.
In the deep winter freeze of the Alberta Bowzone, where late November temps can reach -40F, there are two considerations legendary whitetail outfitter and SITKA Athlete Jim Hole, Jr. prioritizes: keeping warm and completely silent to mimic the stealth and patience of an owl perched in a tree.
READ MORE
My favorite piece of gear is the fanatic bibs and jacket. I am a bow hunter and this is exactly what the doctor ordered. Extremely warm. If Temps are In the single digits I just add an equinox hoodie or the Celsius middy And there’s nothing I can’t handle for an all day sit. Everybody complains about burs From walking through brush on recoveries. I have not wore my hunting clothes on a recovery in 15 years as I know better than that. That’s how you destroyed good clothes with thorns and Breyers and burs.
I always give the deer time to expire. I always walk back to the truck and throw on my carhart bibs and jacket. Then go back in for the recovery even if my walk is an hour out. I understand some guys don’t have this option and I get it. But if you do have the option to get out of your hunting clothes before you start tracking.
Extremely impressed with the warmth and quietness of the bibs & jacket. Equally as unimpressed with the durability of the bibs. Walked through about 40 yards of underbrush on a recovery mission and had tons of pulled threads and a few small tears in the front of the bibs.
Probably the best designed product in the entirely line up. The only thing that should be added is waterPROOF. If the incinerator series could crossbreed with the fanatic series it'd be a winner.
I like the idea of no fleece where the burrs stick, and it mostly works. Good pockets for holding cellphone, accessories, headlamps etc. and I really like the external pocket for slipping stuff I access often in and out of. The only 2 fixes I would suggest is actual full length zippers like on the incinerator and that way your boots wouldn't get mud all over the inside when putting them on at your tree. They could be a little warmer, there's really not much insulation.
I’ve sat in 30° weather the last three days in the morning, they’ve kept me warm along with my older Fanatic jacket and a pair of merino base layers underneath. I’m so glad I got these, moved up on the Stratus pants, these have pockets everywhere, actually nice and light unlike my friends bibs that are super bulky and heavy. I am also wearing the Stratus beanie and fanatic neck Gaiter. I would highly encourage you to buy these to stay warm and I’m from Florida, hunting in Georgia so I’m naturally a person who does not tolerate the cold well.