Birthday Suit

from $219.00

Receive a FREE Critter Funnel Neck Gaiter with every purchase of $75 or more.

Critter Birthday Suit: Rugged Performance for the Outdoors

When you don’t want anything to freeze and fall off: The Critter Birthday Suit combines rugged, classic styling with modern, high-performance fabric technology. Built for demanding work or extended outdoor stays, this full-coverage suit delivers comprehensive protection and comfort without compromising mobility.

Constructed using a durable Polartec® fabric—such as Alpha Direct for high-output activities, or PowerDry for maximum wicking, or ThermalPro for exceptional warmth—the suit creates a thermal barrier that provides a superior warmth-to-weight ratio. Its sleeveless design ensures optimal flexibility with layering, keeping your core and legs consistently warm.

Despite its insulating power, the fabrics remain highly breathable and moisture-wicking, preventing overheating and the clammy feeling that comes from trapped sweat. Featuring two front pockets and a stand-up collar, the Birthday Suit is designed to withstand anything winter can throw at you.

Materials:
Polartec® Alpha Direct 150 with Wool (63% polyester/33% wool/4% nylon) - LIMITED EDITION
Polartec® PowerDry (100% recycled polyester)
Polartec® ThermalPro (100% recycled polyester)

Unisex Sizes:

‍ ‍ Chest Sleeves Waist Inseam

Small 34-36” 33” 28-30” 30”

Medium 38-40” 34” 32-34” 31”

Large 42-44” 35” 36-38” 32”

XLarge 46-48” 36” 40-42” 33”

XXLarge 50-52” 37” 44-46” 34”

Features:

  • Stand-up collar

  • Generous arm holes

  • Two front pockets

  • Elastic waistband in back

  • Shirt-style flap opening for relief

  • Hemmed ankles

    Weight (medium):
    Polartec® Alpha Direct 150 with Wool - 12 ozs.
    Polartec® PowerDry - 12.5 ozs.
    Polartec® ThermalPro - 14.5 ozs.

    Inspired, designed, and crafted with pride in Crested Butte, Colorado.

Material/Color:
Size:

Receive a FREE Critter Funnel Neck Gaiter with every purchase of $75 or more.

Critter Birthday Suit: Rugged Performance for the Outdoors

When you don’t want anything to freeze and fall off: The Critter Birthday Suit combines rugged, classic styling with modern, high-performance fabric technology. Built for demanding work or extended outdoor stays, this full-coverage suit delivers comprehensive protection and comfort without compromising mobility.

Constructed using a durable Polartec® fabric—such as Alpha Direct for high-output activities, or PowerDry for maximum wicking, or ThermalPro for exceptional warmth—the suit creates a thermal barrier that provides a superior warmth-to-weight ratio. Its sleeveless design ensures optimal flexibility with layering, keeping your core and legs consistently warm.

Despite its insulating power, the fabrics remain highly breathable and moisture-wicking, preventing overheating and the clammy feeling that comes from trapped sweat. Featuring two front pockets and a stand-up collar, the Birthday Suit is designed to withstand anything winter can throw at you.

Materials:
Polartec® Alpha Direct 150 with Wool (63% polyester/33% wool/4% nylon) - LIMITED EDITION
Polartec® PowerDry (100% recycled polyester)
Polartec® ThermalPro (100% recycled polyester)

Unisex Sizes:

‍ ‍ Chest Sleeves Waist Inseam

Small 34-36” 33” 28-30” 30”

Medium 38-40” 34” 32-34” 31”

Large 42-44” 35” 36-38” 32”

XLarge 46-48” 36” 40-42” 33”

XXLarge 50-52” 37” 44-46” 34”

Features:

  • Stand-up collar

  • Generous arm holes

  • Two front pockets

  • Elastic waistband in back

  • Shirt-style flap opening for relief

  • Hemmed ankles

    Weight (medium):
    Polartec® Alpha Direct 150 with Wool - 12 ozs.
    Polartec® PowerDry - 12.5 ozs.
    Polartec® ThermalPro - 14.5 ozs.

    Inspired, designed, and crafted with pride in Crested Butte, Colorado.