Sea to Summit Expander Travel Liner Jackets Lightweight: The lightest self-inflating mattress

Lightweight: The lightest self-inflating mattress available

BATTERIES 3 AAA Alkaline or Lithium

Vibram® Kletterlift outsole is specifically designed for comfort and durability

along with knockout features to ensure you're warm and comfortable when winter wails

Sea to Summit Expander Travel Liner Jackets Lightweight: The lightest self-inflating mattressThe Expander sleeping bag liner is made of a super soft and stretchy knitted poly cotton material. The Rectangular, Traveller and Double models do not have side seams, and combined with the stretch fabric, this offers an unprecedented level of comfot in a budget priced liner. A built in antimicrobial treatment keeps odors at bay and won't wash out of the liner when you throw it in the washing machine. This is the perfect travel companion for those