Stone Glacier Grumman Vest

Ultralight Down Vest for Backcountry Hunting and Layering

The Stone Glacier Grumman Vest is a lightweight, highly technical insulation layer built for hunters and outdoor adventurers who need warmth without unnecessary bulk. Weighing just 7.2 oz. in size Large, this vest adds dependable core warmth while staying compact, packable, and easy to layer.

850+ Fill Power Down with Pertex® Quantum Protection

The Grumman Vest uses 850+ fill power goose down treated with HyperDRY™ DWR for exceptional warmth-to-weight performance, even in damp conditions. A 15 denier Pertex® Quantum shell provides lightweight durability, packability, and weather resistance, while Y Fuse fabric technology helps improve downproofing and water beading performance.

Versatile Insulation for Active Use or Cold-Weather Systems

Designed for versatility, the Grumman Vest can be worn as an active insulation piece in cool conditions or layered with the Grumman Jacket when temperatures drop. With 100% traceable RDS-certified down, YKK zippers, an elastic waist hem, streamlined internal cuffs, and an included stuff sack, it is built for efficient warmth in the backcountry.

Key Features:

• Ultralight technical down vest for hunting and outdoor use

• Designed for warmth without bulk

• Works as an active insulation layer or cold-weather mid-layer

• 15 denier Pertex® Quantum shell

• 850+ fill power goose down

• 3.05 oz. of insulation

• HyperDRY™ DWR-treated down

• Water-resistant down helps maintain warmth in damp conditions

• Y Fuse fabric technology improves downproofing and water beading

• 100% traceable RDS-certified down

• Responsibly sourced down from ethically treated ducks and geese

• Streamlined internal cuff design

• Elastic waist hem

• YKK zippers

• Stuff sack included

• Size in stuff sack: 8” x 4” x 3.5”

• Weight: 7.2 oz. in size Large

Style No. 20026

Summary

The Stone Glacier Grumman Vest is an ultralight down insulation layer designed to add efficient core warmth to any mountain hunting system. With 850+ fill power HyperDRY™ goose down, a 15 denier Pertex® Quantum shell, Y Fuse fabric technology, RDS-certified traceable down, YKK zippers, and an included stuff sack, it delivers premium warmth and packability at just 7.2 oz.