Excellent
"I use them under my waders and they keep me super warm. You can wear a pair of thermal pants over top of them very easily."
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Use this size guide to find the right size for your body measurements. All measurements are in Inches. *Indicates outerwear only.
| Size | Chest | Neck | Sleeve |
|---|---|---|---|
| XS | 33"-35" | 13.5" - 14" | 32" - 33” |
| S | 36"-38" | 15.5" - 16" | 33" - 34" |
| M | 39"-41" | 16" - 16.5" | 34" - 35" |
| L | 42"-45" | 16.5" - 17" | 35" - 36" |
| XL | 46"-48" | 17.5" - 18" | 36" - 37" |
| XXL | 49"-51" | 18.5" - 19" | 37" - 38" |
| 3XL | 52"-54" | 19.5" - 20" | 37" - 38" |
| 4XL | 55"-57" | 20.5" - 21" | 37" - 38" |
| Size | Waist | Inseam |
|---|---|---|
| XS | 26" - 28" | 28" |
| S | 29" - 31" | 30" |
| M | 32" - 34" | 31" |
| L | 35" - 37" | 32" |
| XL | 38" - 41 | 33" |
| XXL | 42" - 44" | 33" |
| 3XL | 45" - 47" | 33"* |
| 4XL | 48" - 50" | 33"* |
| Size | Head Circumference |
|---|---|
| S/M | 21.25"-22.75" |
| L/XL | 22"-23.5" |
| One Size | 21.25"-23.5" |
| Size | Hand - Circumference in CM | Hand - Length in CM |
|---|---|---|
| XS | 18 - 19 | 6 - 17 |
| S | 19 - 21 | 17 - 19 |
| M | 21 - 22 | 19 - 20 |
| L | 22 - 24 | 20 - 21 |
| XL | 24 - 26 | 21 - 23 |
| 2XL | 26+ | 23+ |
| - | - | - |
| S/M | 18 - 22 | 16 - 20 |
| L/XL | 22 - 26+ | 20 - 23+ |
*These are body measurements. Not all items are offered in all sizes
How to measure
Chest: Measure around the fullest part of your chest, keeping the tape level and snug under your arms
Neck: Wrap the tape around the base of your neck where a collar would sit - don't pull too tight.
Sleeve: With your arm relaxed at your side, measure from the center back of your neck over the shoulder and down to your wrist.
HATS- Measure around your head, right above your eyebrows
Warm, moisture-managing under-wader layer built for cold, damp, all-day missions.
Our warmest midlayer for cold days, the M's Thermal Pants feature a grid-fleece interior that traps heat next to skin, without adding bulk or limiting range of motion.
• Smooth faced grid-fleece layers perfectly with our baselayers to provide maximum warmth
• Self fabric waistband with dual snap closure and zippered fly allow for easy on and off transitions
• Dual slash handwarmer pockets
• Patterned with a gusseted crotch for maximum comfort and easy layering with bibs or waders.
• Tapered hem for a streamline fit when wearing layers underneath and over top
$2.98 Unlocks Easy Returns
Simms offers returns on items purchased from the simmsfishing.com website within 60 days. When placing your order, you will have the option to pay $2.98 to avoid additional handling fees should you or a gift recipient need to return any or all items. Alternatively, you may return your item(s) for the flat rate of $10 at the time of return.
Find out more about our easy online returns process here or start a return now.
Items purchased on final clearance, stickers, certain oversize items and custom wader orders are not eligible for returns.
Select oversize and odd-shaped items are not eligible for free shipping on returns as noted in the product description.
Canadian shoppers, please note:** All sales are final. Flat rate fee options are not available for customers outside of the United States.
Machine wash and dry. See garment label for details.
Visit our Warranty & Repairs page for full details, start a ticket, or to contact the Bozeman, Montana based customer service team with questions.
You can extend the life of your waders, outerwear and gear with the right care. Check out our tips on topics like wader care and videos on in-field DIY Repairs.
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Overall rating: 4.9 / 5 from 10 reviews.
Review topics: [bottom].
"I use them under my waders and they keep me super warm. You can wear a pair of thermal pants over top of them very easily."
— Jeremy T. (5/5)
"These pants are awesome and I love them. Used them up in Alaska in July and they were perfect. They should make a version with stirrups though. Yes, I've seen this mentioned before. Hey, I know it may not appeal to everyone, but having the pants stay down snuggly when you're getting dressed in your waders and going out for a full day's worth of fishing is key. Give the people what they want, and have a choice of yes or no to stirrups."
— David M. (4/5)
"I wear these as sweats around the house mainly as well on the forks of the Flathead."
— Paul K. (5/5)
"Fit pretty good and is super warm!!! Definitely will buy another one"
— Kyle H. (5/5)
"This was a Christmas present. The recipient loved them"
— Pat W. (5/5)
"I wore these under my waders every day while guiding in AK this season. They kept me warm, comfortable and able to move around on trails & rivers with ease. Highly recommended for cooler weather wading!"
— Devin A. (5/5)
"I like the comfort and function this product provides"
— Joe B. (5/5)
"These fit great, don't ride down, and are very warm. I highly recommend them."
— Buddy D. (5/5)
"Excellent clothes"
— Evgeny L. (5/5)
"Purchased through a Simms dealer. Excellent fit warmth and quality. Add a merino underlayer for winter steelheading when necessary but otherwise these are about perfect for 3 seasons of fishing on their own. Only thing that could make them better would be a draw string or cord to get them a little more snug in the waste. These also look good enough that I don't mind wearing them to the bar after a day of fishing."
— Anonymous (5/5)
For more than three decades, Simms has set the standard in waders, footwear, outerwear, and sportswear — gear designed and developed to help anglers maximize every second they spend on the water. You Get One Life. Fish It Well.
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