Men's Baselayer – Tagged "Base Layer Bottoms"– RiverSportsOutfitters

Buy One Get One 50% Off- In Store Only (excludes Bike & Boats)

Clear

0

Clear

Men

Men
Baselayer & Underwear

Baselayer Bottoms

Baselayer Tops

Underwear

Bottoms

Pants

Shorts

Tops

Long Sleeve Shirts

Short Sleeve Shirts

Sweatshirts, Sweaters and Hoodies

Fleece and Outerwear

Bottoms

Tops

Rainwear
Women

Women
Baselayer and Underwear

Bottoms

Tops

Underwear

Bottoms

Pants

Shorts

Skirts and Skorts

Tops

Long Sleeve Shirts

Short Sleeve Shirts

Sweatshirts, Sweaters and Hoodies

Fleece and Outerwear

Bottoms

Tops

Rainwear
Footwear & Accessories

Footwear & Accessories
Men's Footwear

Boots

Casual

Climbing

Hiking

Running

Sandals

Water

Women's Footwear

Boots

Climbing

Hiking

Running

Sandals

Water

Socks

Men's Socks

Women's Socks

Clothing Accessories

Insoles

Belts

Eyewear

Fabric Care

Hands

Heads

Gaiters

Travel Accessories

Watches, GPS and Monitors
Boats

Boats
Canoes

Esquif

Northstar

Nova Craft

Swift

Wenonah

Old Town

Kayaks

Recreational

Whitewater

Fishing

Pedal Driven

Electric

SUPs

Inflatable

Hardshell

Used Boats

Boating Gear

Paddles

PFDs

Accessories, Parts and Gear
Bikes

Bikes
All Bikes

Electric Bikes

Cube Bikes

Mountain Bikes

Hybrid Bikes

Gravel Bikes

Racks

Bike Racks and Carriers

Roof Racks

Trailers

Bike Accessories
Outdoor Gear

Outdoor Gear
Camping Gear

Bags and Packs

Cookware and Stoves

Coolers

Food

Furniture

Headlamps, Flashlights and Lanterns

Hydration and Cups

Sleeping Bags and Blankets

Tents and Shelters

Trekking Poles

Climbing Gear

Chalk and Chalk Bags

Climbing Accessories

Climbing Shoes

Hardware

Harnesses

Helmets

Ropes

Packs and Bags
About

About

Contact Us

Frequently Asked Questions

Store Policies

Events
Rentals
Sale
Login
Create account

Search

Clear

Best sellers

#229 Blundstone Rigger Boot Mushroom AUS

Regular price $247.99

Regular price

-

Unit price / per

Hydro Flask 10 oz Wine Tumbler Indigo

10 oz Wine Tumbler

Regular price $29.95

Regular price

-

Unit price / per

10Ah PRO POWER KIT

Regular price $129.99

Regular price

-

Unit price / per

Hydro Flask 12 oz Kids Insulated Food Jar Plumeria

Hydro Flask 12 oz Kids Insulated Food Jar Honeydew

12 oz Kids Insulated Food Jar

Regular price $34.95

Regular price

-

Unit price / per

13" Dual Compartment Mesh Storage Bag for the BlackPak Pro

Regular price $16.00

Regular price

-

Unit price / per

YakAttack 13x16 Shortstak Upgrade Kit For Blackpak Pro, Black

13x16 Shortstak Upgrade Kit For Blackpak Pro, Black

Regular price $61.95

Regular price $60.00

-

Unit price / per

#229 Blundstone Rigger Boot Mushroom AUS

Regular price $247.99

Regular price

-

Unit price per
10 oz Wine Tumbler

Regular price $29.95

Regular price

-

Unit price per
10Ah PRO POWER KIT

Regular price $129.99

Regular price

-

Unit price per
12 oz Kids Insulated Food Jar

Regular price $34.95

Regular price

-

Unit price per
13" Dual Compartment Mesh Storage Bag for the BlackPak Pro

Regular price $16.00

Regular price

-

Unit price per
13x16 Shortstak Upgrade Kit For Blackpak Pro, Black

Regular price $61.95

Regular price $60.00

-

Unit price per

Search

Men's Baselayer

Filter

Brand

Smartwool

Color

Black

Size

XS

S

M

L

XL

XXL

Availability

In stock

Out of stock

Sort by

Featured

Best selling

Alphabetically, A-Z

Alphabetically, Z-A

Price, low to high

Price, high to low

Date, old to new

Date, new to old

Filter

Brand

Smartwool

Color

Black

Size

XS

S

M

L

XL

XXL

Availability

In stock

Out of stock

Sort by

Featured

Best selling

Alphabetically, A-Z

Alphabetically, Z-A

Price, low to high

Price, high to low

Date, old to new

Date, new to old

Smartwool Men's Classic All-Season Merino Base Layer Bottom Black

Smartwool Men's Classic All-Season Merino Base Layer Bottom

Regular price $100.00

Regular price $0.00

-

Unit price / per

View details Hide details

Smartwool Men's Classic All-Season Merino Base Layer Bottom

Quantity

Local pickup available

Selling fast - 3 left

SKU: 210000222999

Smartwool Men's Classic Thermal Merino Base Layer Bottom Black

Smartwool Men's Classic Thermal Merino Base Layer Bottom

Regular price $115.00

Regular price

-

Unit price / per

View details Hide details

Smartwool Men's Classic Thermal Merino Base Layer Bottom

Quantity

Local pickup available

Selling fast - 2 left

SKU: 210000222982

Smartwool Men's Classic All-Season Merino Base Layer Bottom Black

Smartwool Men's Classic All-Season Merino Base Layer Bottom

Regular price $100.00

Regular price $0.00

-

Smartwool Men's Classic Thermal Merino Base Layer Bottom Black

Smartwool Men's Classic Thermal Merino Base Layer Bottom

Regular price $115.00

Regular price

-

Links

FAQs
Contact Us
About
Calendar

Social media

Facebook
Instagram
YouTube

Newsletter

Subscribe to our emails

Email

© 2026, RiverSportsOutfitters Powered by Shopify

Payment methods