Teton Sports Mammoth Cotton Sleeping Bag Liner — Clean, Machine-Washable 91x58 in Black

Upgrade your sleeping setup with the Teton Sports Mammoth Cotton Sleeping Bag Liner. This oversized XL liner adds a soft, breathable layer that can enhance comfort and help keep your sleeping bag clean between washes. Measuring 91 by 58 inches, it wraps you in a generous cocoon that works well with the Mammoth and Fahrenheit Mammoth double sleeping bags, while its split sides support easy entry and exit.

Designed for a range of outdoor conditions, the liner contributes a tactile warmth without bulk and uses a fabric you’ll feel as gentle against the skin as a familiar sheet. Its machine washable and dryable construction makes maintenance straightforward after camping trips, flights, or hostel stays, helping you stay ready for the next adventure without sacrificing cleanliness or comfort.

Why it matters

• Oversized XL design adds space and flexibility for comfort or layering with your sleeping bag.
• Soft, breathable cotton delivers a smooth, cozy feel that helps you settle in quickly after a long day outdoors.
• Keeps the interior of your sleeping bag cleaner, potentially extending its life and reducing the need for frequent deep washes.
• Split sides enable easy in-and-out access, even when you share a sleeping bag or need to move during the night.

Versatile uses and practical care

• Best paired with TETON Sports Double Sleeping Bags, including Mammoth and Fahrenheit Mammoth models, for a tailored fit.
• Can double as a guest sheet or a lightweight travel blanket when you’re away from home, such as on airplanes or in drafty hotel rooms.
• Machine wash and dry for quick, hassle-free cleanup after outdoor adventures or transit days.
• Compact enough to pack with your camping gear while still offering a generous sleeping surface when opened fully.

With its functional design and easy maintenance, this liner is a practical companion for campers, hikers, or travelers who value cleanliness and comfort without adding heavy gear. While warmth and fit will vary by individual sleep temperature and bag, many users find it a useful option to tailor their nights away from home.