MATERIAL:Redcamp sleeping bag liner is made of thicker and breathable polar fleece.It is washable and not easy to be broken.It will give you a soft and comfortable feeling when sleeping in the liner. SIZE:Unfolding size is 75"*31"/190*78cm.Package size is 12.6"*6.7"/32*17cm.It is great for couples. MAKE IT A DOUBLE:Two liners can be zipped together to make a double-sized liner.It is great for couples. MULTI PURPOSE USE:Can be used as a liner or as a blanket.Take our sleeping bag liner camping, hiking, backpacking or to the park, it wil be your best choice. 100% MONEY BACK GUARANTEE: REDCAMP offers a 360-day limited manufacturer warranty. If any piece broken,you can feel free to contact us, we will give you a satisfying solution.