Base Layer Tops / Bottoms / Cold Weather Pants

6 products

USMC FROG Silk Weight Thermal Base Layer Bottom - Size Large

(0)

$26.97

Authentic USMC FROG Silk Weight Thermal Base Layer Bottom

Genuine USMC-issue FROG (Flame Resistant Organizational Gear) silk-weight base layer bottom. Lightweight thermal protection trusted by Marines in extreme environments. Brown Coyote color.

Key Features

Flame-Resistant Fabric: Meets military FR standards — built into the fabric, not a coating
Silk-Weight Construction: Exceptional warmth-to-weight ratio without bulk
Moisture-Wicking: Keeps skin dry during high-output activity
Flatlock Seams: Eliminates chafing during extended wear
Authentic USMC Issue: Genuine military surplus, not a commercial replica

Condition: New.

Sizing Chart — ECWCS Bottoms

Size	Waist Relaxed (inches)	Inseam (inches)
Xsmall Short	18.5 – 21.5	27 – 28
Xsmall Regular	18.5 – 21.5	29 – 30
Small Short	22.5 – 25.5	27 – 28
Small Regular	22.5 – 25.5	29 – 30
Small Long	22.5 – 25.5	31 – 32
Medium Regular	26.5 – 29.5	29 – 30
Medium Long	26.5 – 29.5	31 – 32
Large Regular	30.5 – 33.5	29 – 30
Large Long	30.5 – 33.5	31 – 32
XL Regular	34.5 – 37.5	29 – 30
XL Long	34.5 – 37.5	31 – 32
XL XLong	34.5 – 37.5	33 – 34
XXL Regular	38.5 – 41.5	29 – 30
XXL Long	38.5 – 41.5	31 – 32
XXL XLong	38.5 – 41.5	33 – 34

(3) Waist measurement is taken around the natural waistline.
(4) Inseam is taken from crotch point straight down to ankle.

Color

Military Polartec Cold Weather Thermal Long Underwear Base Layer

(0)

From $10.99

Military Polartec Cold Weather Thermal Long Underwear — Base Layer

Authentic US Military Polartec cold weather thermal long underwear. Advanced moisture-wicking base layer built to military specifications. Fits smoothly under additional clothing without bulk. Made in USA.

Key Features

Polartec Technology: Moisture-wicking fabric keeps skin dry during high-activity periods
Superior Insulation: Traps body heat while remaining lightweight and flexible
Contoured Fit: Designed for easy layering under uniforms or outerwear
Military Specification: Built to US Armed Forces standards
Durable Construction: Made for harsh conditions and frequent use

Condition

New With Tags — Unused, in original packaging with tags.

Excellent #1 — Excellent to new condition with minimal or no signs of wear. May be outside original packaging or have missing tags. May contain storage scuffs.

Sizing Chart — ECWCS Bottoms

Size	Waist Relaxed (inches)	Inseam (inches)
Xsmall Regular	18.5 – 21.5	29 – 30
Small Short	22.5 – 25.5	27 – 28
Small Regular	22.5 – 25.5	29 – 30
Small Long	22.5 – 25.5	31 – 32
Medium Regular	26.5 – 29.5	29 – 30
Medium Long	26.5 – 29.5	31 – 32
Large Regular	30.5 – 33.5	29 – 30
Large Long	30.5 – 33.5	31 – 32
XL Regular	34.5 – 37.5	29 – 30
XL XLong	34.5 – 37.5	33 – 34
XXL XLong	38.5 – 41.5	33 – 34

(3) Waist measurement taken around the natural waistline.
(4) Inseam taken from crotch point straight down to ankle.

Peckham US Military Thermal Base Layer Drawers - GI Issue ECWCS Sizes S - L - XL

(0)

$24.00

Peckham US Military Thermal Base Layer Drawers — GI Issue

Authentic Peckham thermal base layer drawers in classic military Brown. Genuine US Military ECWCS issue, built to strict military specifications. NSN numbers on package per size.

Key Features

Advanced Thermal Insulation: Traps body heat while wicking moisture away from skin
Moisture-Wicking: Keeps skin dry during high-activity periods
Lightweight: Maximum warmth without bulk under uniforms or clothing
Durable Construction: Reinforced seams built for repeated field use and washing
ECWCS Compatible: Designed to layer within the Extended Cold Weather Clothing System

Condition: New.

Sizing Chart — ECWCS Bottoms

Size	Waist Relaxed (inches)	Inseam (inches)
Xsmall Short	18.5 – 21.5	27 – 28
Xsmall Regular	18.5 – 21.5	29 – 30
Small Short	22.5 – 25.5	27 – 28
Small Regular	22.5 – 25.5	29 – 30
Small Long	22.5 – 25.5	31 – 32
Medium Regular	26.5 – 29.5	29 – 30
Medium Long	26.5 – 29.5	31 – 32
Large Regular	30.5 – 33.5	29 – 30
Large Long	30.5 – 33.5	31 – 32
XL Regular	34.5 – 37.5	29 – 30
XL Long	34.5 – 37.5	31 – 32
XL XLong	34.5 – 37.5	33 – 34
XXL Regular	38.5 – 41.5	29 – 30
XXL Long	38.5 – 41.5	31 – 32
XXL XLong	38.5 – 41.5	33 – 34

(3) Waist measurement is taken around the natural waistline.
(4) Inseam is taken from crotch point straight down to ankle.

Color

PolarTec US Military Mid Weight Thermal Base Layer Waffle Drawers

(0)

$21.95

US Military PolarTec Mid-Weight Thermal Waffle Drawers — Bone — New USGI

Authentic US Military GI issue mid-weight thermal base layer drawers by PolarTec. Waffle-knit construction with advanced moisture-wicking performance. Lightweight warmth with quick-dry material and flexible fit for unrestricted movement. Made in USA to military specification. Brand new condition.

Key Features

PolarTec Waffle Knit: Advanced moisture-wicking fabric keeps you dry and warm
Mid-Weight Insulation: Maximum warmth with minimal bulk
Quick-Dry Construction: Rapid moisture evaporation prevents chills
Flexible Fit: Unrestricted movement for active use
Genuine USGI: Made in USA to exact military specification

Condition: Brand New — Authentic US Military Issue

Size Chart — Thermal Base Layer Drawers

Size	Waist (inches)	Hip (inches)	Inseam — Short	Inseam — Regular	Inseam — Long
XS Short	27 – 30	33 – 36	27.5	N/A	N/A
Small Short	28 – 31	34 – 37	27.5	N/A	N/A
XL Regular	40 – 43	46 – 49	N/A	29.5	N/A
XL Long	40 – 43	46 – 49	N/A	N/A	31.5
2XL Long	44 – 47	50 – 53	N/A	N/A	31.5

Base layer drawers are designed to be worn under outer layers — size to your body measurements. Questions about fit? Contact us before purchasing.

Color

US Military PolarTec Thermal Waffle Shirt - Issued Base Layer Long Sleeve

(0)

From $22.95

Authentic US Military PolarTec Thermal Waffle Shirt — Base Layer Long Sleeve

Genuine US military-issue PolarTec waffle-knit thermal top. Built to ECWCS specifications for extreme cold weather performance. Desert Sand color.

Key Features

PolarTec Fabric: Advanced moisture-wicking synthetic insulation
Waffle-Knit Construction: Air pockets for superior warmth-to-weight ratio
Military-Grade Durability: Reinforced stitching built for field use
ECWCS Compatible: Designed to layer within the Extended Cold Weather Clothing System

Condition: Used/Issued Good to Very Good — no rips or tears, may contain minor pilling, ink writing, faded info tag, stains, loose threads or repairs.

Sizing Chart — ECWCS Tops

Size	Across Chest (inches)	Sleeve Length (inches)
Xsmall Short	34.5 – 37.5	30.5 – 31.5
Xsmall Regular	34.5 – 37.5	32 – 33
Small Short	38.5 – 41.5	31.25 – 32.25
Small Regular	38.5 – 41.5	32.75 – 33.75
Small Long	38.5 – 41.5	34.25 – 35.25
Medium Regular	42.5 – 45.5	33.5 – 34.5
Medium Long	42.5 – 45.5	35 – 36
Large Regular	46.5 – 49.5	34.25 – 35.25
Large Long	46.5 – 49.5	35.75 – 36.75
XL Regular	50.5 – 53.5	35 – 36
XL Long	50.5 – 53.5	36.5 – 37.5
XL XLong	50.5 – 53.5	38 – 39
XXL Regular	54.5 – 57.5	35.75 – 36.75
XXL Long	54.5 – 57.5	37.25 – 38.25
XXL XLong	54.5 – 57.5	38.75 – 39.75

(1) Across chest measurement is taken approximately 1–2 inches down from armpit, at the widest part of the chest.
(2) Sleeve length measurement is taken from center back neck, straight out to the shoulder and then down the arm.

Color

US Military ECWCS Fire Resistant Thermal Base Layer Drawers - Peckham Size Medium

(0)

$18.95

US Military ECWCS Fire Resistant Thermal Base Layer Drawers — Peckham

Authentic Peckham fire-resistant thermal drawers, genuine US Military ECWCS issue. Beige/Bone color. NSN: 8415-01-588-3134.

Key Features

Fire-Resistant: Meets military FR specifications for tactical environments
Thermal Insulation: Traps body heat while wicking moisture away from skin
Lightweight: Maximum warmth without bulk under uniforms or clothing
Durable Construction: Reinforced seams built for repeated field use and washing
ECWCS Compatible: Designed to layer within the Extended Cold Weather Clothing System

Condition: New without tags.

Sizing Chart — ECWCS Bottoms

Size	Waist Relaxed (inches)	Inseam (inches)
Xsmall Short	18.5 – 21.5	27 – 28
Xsmall Regular	18.5 – 21.5	29 – 30
Small Short	22.5 – 25.5	27 – 28
Small Regular	22.5 – 25.5	29 – 30
Small Long	22.5 – 25.5	31 – 32
Medium Regular	26.5 – 29.5	29 – 30
Medium Long	26.5 – 29.5	31 – 32
Large Regular	30.5 – 33.5	29 – 30
Large Long	30.5 – 33.5	31 – 32
XL Regular	34.5 – 37.5	29 – 30
XL Long	34.5 – 37.5	31 – 32
XL XLong	34.5 – 37.5	33 – 34
XXL Regular	38.5 – 41.5	29 – 30
XXL Long	38.5 – 41.5	31 – 32
XXL XLong	38.5 – 41.5	33 – 34