Sea to Summit Silk Blend Sleeping Bag Liner
Designed for comfort-focused backpackers, the Sea to Summit Silk Blend Sleeping Bag Liner adds noticeable warmth while creating a soft, luxurious sleep environment inside your bag. The fabric blends 72% Thermolite® Pro yarns—including infrared technology and Thermolite® EcoMade fibers—with 28% natural silk, resulting in a liner that feels smooth against the skin while boosting thermal efficiency on cooler nights.
Often called the climate core of a sleep system, this liner helps extend the temperature range of your sleeping bag, making it especially useful for shoulder seasons, higher elevations, and unpredictable mountain weather. It also keeps your sleeping bag cleaner, reducing the need for frequent washes during long trips.
Two versions are available to match different sleep styles. The Rectangular with Pillow Sleeve includes Comfort Stretch Panels along the seams for increased freedom of movement and a built-in pillow sleeve for added nighttime comfort. The Mummy version features practical shoulder openings, allowing you to regulate temperature easily without fully exiting the liner.
Integrated HeiQ odor control technology helps keep the liner fresher during extended use—ideal for thru-hikes and multi-week trips. Like all Sea to Summit products, it’s backed by the Sea to Summit Lifetime Guarantee.
Product Features
-
Adds warmth and comfort to your sleeping bag with a premium silk + Thermolite® blend
-
Mummy-shaped liner acts as the climate core of your sleep system
-
Rectangular version doubles as a hygienic travel sleep sheet
-
Comfort Stretch Panels (rectangular version) for better movement
-
Shoulder openings (mummy version) for easy temperature regulation
-
HeiQ odor control for extended freshness
-
Backed by the Sea to Summit Lifetime Guarantee
🏔️ Perfect for PCT Hikers
-
Boosts Warmth Without Much Weight: Extends your sleeping bag’s temperature range for cold Sierra nights and shoulder seasons
-
Comfort on Long Thru-Hikes: Silk blend feels soft against skin after dusty, high-mile days
-
Keeps Your Bag Cleaner: Reduces grime and body oils during multi-week stretches between washes
-
Odor Control for Extended Use: HeiQ technology helps keep things fresher on long sections
-
Versatile Sleep System Upgrade: Choose mummy for efficiency or rectangular for added comfort and flexibility
From early-season desert nights to high-elevation camps, the Sea to Summit Silk Blend Liner adds warmth, hygiene, and comfort—without overcomplicating your PCT sleep system.
