Kelty Cosmic Synthetic Fill 20° Regular Sleeping Bag – 3-Season Backpacking

Three-season warmth in a lightweight, budget-friendly package

The Kelty Cosmic Synthetic Fill 20 Degree Sleeping Bag is a fully equipped mummy bag designed for backpackers who want comfort without breaking the bank. Built with Cirroloft synthetic insulation, it maintains loft and delivers steady warmth, even when conditions feel damp. The soft nylon taffeta lining adds a touch of luxury to evening camp rituals, while the overall design prioritizes a natural fit and practical features for real-world use. The regular size accommodates sleepers up to 6 ft, and the colorway blends tapestry blue with smoke for a versatile outdoor look.

Key specs and design details come together to support confident nights on the trail, from a well-thought-out footbox to exterior storage that keeps essentials within reach. This bag is crafted for those who value weight-conscious gear that still holds up to regular outdoor use across multiple seasons.

Key specifications at a glance

• 20 Degree Temp Rating, Regular Size: Fits sleepers up to 6 ft; fill weight 30.5 oz; total weight 2 lbs 13 oz; non-compressed size 16 x 9 inches; color tapestry blue / smoke
• Integrated compression stuff sack to maximize backpack space and simplify packing
• Cirroloft synthetic insulation maintains loft for even warmth in cool and damp conditions
• Tailored fit with a roomy footbox and multiple length options up to 6 ft 6 in; exterior stash pocket for overnight essentials
• Kelty craftsmanship emphasizes durability and practicality for trail, campground, or remote campsites

Packable warmth and everyday comfort

On trail nights, the Cosmic feels lighter than expected thanks to its packable design. The insulated core compresses neatly into the included sack, helping you keep other gear within easy reach. A spacious footbox provides natural movement for toes, reducing fatigue after long days of hiking.

• Three-season versatility suitable for spring cool-downs and brisk summer nights
• Soft interior fabric minimizes friction on the skin for restful sleep

Practical features that address real camping routines

Beyond warmth, the Cosmic Synthetic includes thoughtful touches like an exterior stash pocket and a durable zipper. It’s built to stand up to regular use in tents, cabins, or on the edge of a trail, offering reliable performance without overpromising outcomes.