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Base Layers

High-performance men's and women's fleece base layers offer comfort and warmth for your favorite cool weather activities.

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Men's Immersion Research Thick Skin Fleece One Piece Union Suit Men's Immersion Research Thick Skin Fleece One Piece Union Suit

Men's Thick Skin Fleece Union Suit

$125.00
Men's Immersion Research Polartec Power Grid Fleece K2 Union Suit Men's Immersion Research Polartec Power Grid Fleece K2 Union Suit

K2 Power Grid™ Fleece Union Suit

$150.00
Immersion Research Polartec Power Grid Debrief Suit Immersion Research Polartec Power Grid Debrief Suit

Debrief Union Suit

$180.00
Immersion Research Kid's Heavyweight Thick Skin Fleece Union Suit Immersion Research Kid's Heavyweight Thick Skin Fleece Union Suit

Kid's Thick Skin Fleece Union Suit

$59.00
Immersion Research Power Wool™ Everyday Sweater in Charcoal Immersion Research Power Wool™ Everyday Sweater in Charcoal

Power Wool™ Everyday Sweater

$95.00
Immersion Research Crew Neck Baseline Long Sleeve Shirt Crimson Sky Immersion Research Crew Neck Baseline Long Sleeve Shirt Blue Sapphire

Polartec® Crewneck Baseline Shirt

$95.00

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Immersion Research Crew Neck Baseline Long Sleeve Shirt Red/Gray Immersion Research Crew Neck Baseline Long Sleeve Shirt Red/Gray

2023 Polartec® Crewneck Baseline Shirt | OUTLET

$66.00 $95.00

Men's Long Sleeve Thick Skin Top

$79.00
Men's Immersion Research Thick Skin Fleece Pants Men's Immersion Research Thick Skin Fleece Pants

Men's Thick Skin Fleece Pants

$65.00
Women's Immersion Research Thick Skin Fleece Long Sleeve Top Back Women's Immersion Research Thick Skin Fleece Long Sleeve Top

Women's Long Sleeve Thick Skin Top

$79.00
Immersion Research Women's Thick Skin Pants Blackout Immersion Research Women's Thick Skin Pants Blackout

Women's Thick Skin Fleece Pants

$65.00

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Immersion Research Power Wool 3/4 length base layer pants

Power Wool™ Lil Jawns

$50.00
Immersion Research Women's Polartec Susitna Fleece Pullover Blue/Maroon

Women's Polartec® Susitna Fleece Pullover

$105.00
Immersion Research Women's Polartec Fleece Susitna Base Layer Pants Blue-Gray/Maroon Immersion Research Women's Polartec Fleece Susitna Base Layer Pants Blue/Light Blue

Women's Polartec® Susitna Fleece Pants

$105.00

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2024 Power Wool™ Short Sleeve GraviTee Shirt | OUTLET

$49.00 $70.00

  • Save 30%

Immersion Research Black Sleeveless Tank

Power Grid™ Treasure Vest | OUTLET

$35.00 $50.00
Immersion Research Power Wool GraviTee in Lilac Immersion Research Power Wool GraviTee in Lilac

Power Wool™ Short Sleeve GraviTee Shirt

$70.00