Sporting premium stretch, knit poly-cotton for added versatility and warmth, the Sea to Summit Expander Sleeping Bag Liner also includes an anti-microbial treatment that keeps nasty odors at bay. Incredibly comfortable to sleep in, the liner helps extend the life of your sleeping bag and features double-folded, reinforced seams for added durability.
• Dimensions: 73″L x 36″W
• Weight: 11 oz.
• Color: navy
Before You Order
Confirm the 73 by 36 inch dimensions and navy color match your sleeping bag setup before ordering; this listing identifies the item as part 121-34.
Frequently Asked Questions
What size is this sleeping bag liner?
It measures 73 inches long by 36 inches wide.




