Sea to Summit Comfort Blend sleeping bag liner Rectangular, TENCEL blend, lightweight breathable travel sheet

The Sea to Summit Comfort Blend Rectangular Sleeping Bag Liner is a soft, lightweight TENCEL lyocell/polyester blend liner that boosts comfort and hygiene for camping or travel.

Designed as a breathable, easy-care layer, this rectangular liner slips inside rectangular sleeping bags or doubles as a clean sheet replacement in hotels and hostels. It combines the silky feel of TENCEL with stretch-knit construction and HeiQ odor control, giving a fresh sleeping surface and added insulation without heavy bulk. The rectangular cut maximizes usable space, and Sea to Summit backs it with a lifetime guarantee.

How does this liner improve comfort on multi-night trips?

The Comfort Blend liner adds a soft, smooth surface between you and your bag or mattress, reducing fabric friction and making sleeping more pleasant in varied conditions. Its stretch-knit construction moves with you, preventing bunching and preserving the sleeping bag's shape and loft. Because it’s lightweight, it won’t meaningfully increase pack weight yet still provides a measurable comfort upgrade.

• Soft TENCEL/polyester blend for a silky, breathable feel
• Stretch-knit fabric that reduces bunching and improves mobility
• Low bulk and low weight for easy packing

Will the liner help keep my sleeping bag cleaner and fresher?

Yes — using this liner creates a protective barrier that captures sweat, skin oils, and dirt so your sleeping bag stays cleaner for longer. HeiQ odor control treatment helps reduce smells during extended use, making it more pleasant on multi-night trips or when laundering options are limited. When the liner needs cleaning, it’s simpler and faster to wash than a full sleeping bag.

• Barrier against body oils and dirt to extend bag cleanliness
• HeiQ odor control to inhibit buildup of unpleasant smells
• Machine washable for easy maintenance while travelling

How does the rectangular shape affect fit and versatility?

The rectangular cut is sized to fit rectangular sleeping bags or to be used alone as a travel sheet on hotel beds. Its roomy shape offers more freedom of movement than mummy-style liners and is ideal for side sleepers or those who prefer stretching out. If you want a slimmer fit for mummy bags, other Sea to Summit liner shapes may be a better match, but the rectangle maximizes comfort and multi-use functionality.

• Roomy rectangular profile for unrestricted movement
• Compatible with rectangular sleeping bags or as a standalone travel sheet
• Simple to layer under quilts or over sleeping bag insulation

What are the care and performance features to expect?

The liner is engineered for everyday travel performance: a TENCEL/polyester blend that balances softness, moisture management, and durability. HeiQ-treated fibers help keep the liner smelling fresher between washes, and the stretch-knit finish reduces wear from repeated movement. Sea to Summit’s lifetime guarantee covers manufacturing defects, reflecting the brand’s commitment to long-term use.

• TENCEL Lyocell blend wicks moisture and feels cool to the touch
• HeiQ odor control treatment for extended freshness
• Machine washable and quick to dry for easy field care

Who is this product for? The Sea to Summit Comfort Blend Rectangular Sleeping Bag Liner is aimed at campers, backpackers, and travelers who want an extra layer of comfort or a hygienic sleeping surface without adding significant weight. It suits anyone who prefers a roomier liner shape — side sleepers, people sharing beds, and those staying in hostels or hotels who want a clean, packable sheet. If you need a lightweight, low-maintenance way to protect your sleeping bag and sleep more comfortably on the road, this liner is a practical, durable option.