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Men's Clothing Size Chart

Use this size guide to find the right size for your body measurements. All measurements are in Inches. *Indicates outerwear only.

Tops
Bottoms
Hats
Gloves
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+
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Clear Filter

Men's Heavyweight Baselayer Bottom

Sale Price $62.97 $89.95

Locks in dependable warmth under waders for long, cold, river days.

Color: Black
Size: S
Free standard shipping on orders over $150
Description

When days get shorter, stay in the game longer with our Heavyweight Baselayer Bottoms powered by stretch micro-grid fleece for optimum mobility, warmth and moisture wicking comfort.


  • Smooth jacquard face with grid-fleece backside adds stretch and micro pockets to trap heat and wick away moisture
  • Flat elastic waistband and fly pouch designed with minimal seams for a chafe-free, next to skin comfort
  • Stretch panels strategically designed from lower calf to ankle cuffs allow for easy integration when worn with socks and paired with waders or bibs and boots.

FABRIC TECH: Body - 190 gsm 96% polyester, 4% elastane micro grid fleece finished with antimicrobial + moisture management; Lower Legs - 88% polyester, 12% elastic
ITEM #: PG-13308
Key Details

• Smooth jacquard face with grid-fleece backside adds stretch and micro pockets to trap heat and wick away moisture
• Flat elastic waistband and fly pouch designed with minimal seams for a chafe-free, next to skin comfort
• Stretch panels strategically designed from lower calf to ankle cuffs allow for easy integration when worn with socks and paired with waders or bibs and boots.

Returns

$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.

Care

Machine wash and dry. See garment label for details.

Warranty Policy & Repair Info
  • Functional Defect? We'll replace it.
  • Within the First Year? Repairs on us.
  • Beyond One Year? We'll repair it or make it right.

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.

Goes Well With

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heavyweight-baselayer-bottom Black
Men's Heavyweight Baselayer Bottom
$62.97 $89.95
Color: Black
Size: S
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Overall rating: 4.8 / 5 from 10 reviews.

AI Generated Review Summary

Summary topics

Review topics: [fit, layer, pair].

Review highlights

Reviews

Great product but stirrups!!

"Pants need to have stirrups on legs. That’s my only suggestion. Other than that they are great. That’s why can’t give 5 star."

Vinny G. (4/5)

Men's Heavyweight Baselayer Bottom

"The baselayer bottoms fit really well and make a big difference when wading in 40 deg water temps."

Jason F. (5/5)

Favorite pair of Base layers I own

"Wear them nearly daily in the winter whether it be on the water, the slopes or to work. Fantastic pair of base layers."

Stuart (5/5)

Heavyweight baselayer

"Perfect fit and exactly what I hoped for. Extremely warm and comfortable, also. All you need underneath. They have plenty of room, so order whatever size you wear. Very good purchase!"

William M. (5/5)

Good fit but not "heavyweight"

"These pants are well made and fit well. My only comment is that they're not really that warm for winter fishing, which is disappointing. I'll wear them in the shoulder seasons (fall and spring) but not in winter."

flyfishpatriot (4/5)

Base layer

"Great for the cold days when layering up to head out on the water. Not the skin tight fit that some brands have and allows for long periods of warmth"

Sean M. (5/5)

Cold weather fishing

"Haven't used them yet, but fit & feel excellent. Am expecting great results."

John S. (5/5)

Sizes run very big

"Nice, but I can't wear them. Too big"

Alejandro E. (5/5)

Amazing

"Amazing"

James C. (5/5)

0

"This is the best base layer I've worn. Super comfortable great fit and there's no struggling to move. Excellent base layer for the cold days on the water"

Anonymous (5/5)

Q&A

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Men's Heavyweight Baselayer Bottom
Color: Black
Size: S