4 Season Mummy Sleeping Bag – Lightweight Warm Cotton Envelope Backpacking Sleeping Bag for Winter & Outdoor Camping

Four Seasons of Warmth. One Bag. No Compromises.

Winter bites hard. Summer trails run long. This 4 Season Mummy Cotton Sleeping Bag was built to handle both ends of the spectrum and everything in between — delivering genuine all-season warmth in a lightweight, packable design that serious outdoor sleepers trust night after night.

Cotton-Filled Warmth That Lasts — Natural cotton fill retains heat efficiently, breathes naturally, and stays comfortable across shifting overnight temperatures. Warm when it needs to be. Never suffocating when it does not.

Mummy & Envelope Dual Design — The fitted mummy profile locks in body heat on the coldest nights while the envelope configuration gives you the freedom to open up and breathe on milder evenings. Maximum versatility in a single bag.

Lightweight Packable Build — Compresses into a tight carry bundle without the bulk typically associated with 4 season bags. Full winter performance that does not punish your pack weight.

Built For:

• Winter and sub-zero camping
• 4 season backpacking and hiking
• Cold weather outdoor travel
• Autumn and spring overnight trips
• Emergency and survival preparedness

One bag for every season, every trail, every forecast. Order today and get free shipping to your door.

Free curbside delivery on all furniture, anywhere in the contiguous U.S. Most orders arrive in 7–13 days. You have 30 days from delivery to start a free return — we'll arrange the pickup.

Vacuum weekly with a soft brush. Blot spills immediately with a clean, dry cloth. Spot clean with mild soap and water — performance fabrics release most stains without professional cleaning.