Material: Skin-friendly A level cotton. It's very soft and comfortable against your skin, like bedsheets at home. It doesn't make you feel like I've been "packaged" in man-made material. - This sleeping bag liner is very suitable for autumn camp. It is being cool to sleep. The sleeping bag liner is machine washable and can be recycled after washing and drying. You can also use it by itself to sleep on a Hotel, Hostels' sofa or bed. Instead of sending a sleeping bag to the cleaners, just use the machine to wash this liner with your laundry. - This sleeping bag liner can appease your germiphobe. Your body doesn't have to be in direct contact with an unfamiliar bed. This liner not only protected Your skin from the cooties but it eased Your mind and enabled sweet dreams. Size: 82.7"L x 31.5"W, If you are a person with some girth,This self tan sleep sack is also equally suitable for you, you can lie down in it and flip your body as much as you like. - This bag works very well for someone who likes a little extra room to squirm around in at night. 【Ultra-light and portable】Storage size (storage bag included)2.4"L x 5.9"W,128g/4.51oz,Packs very small, sleeping sack which took up minimal space in your side bag. it was very easy to roll up and put back in its travel bag. Very light to carry which makes it nice for trekking. - Happy camping! Size: 82.7"L x 31.5"W If you are a person with some girth,This self tan sleep sack is also equally suitable for you, you can lie down in it and flip your body as much as you like. - This bag works very well for someone who likes a little extra room to squirm around in at night. Storage size (storage bag included)2.4"L x 5.9"W,128g/4.51oz Packs very small, sleeping sack which took up minimal space in your side bag. it was very easy to roll up and put back in its travel bag. Very light to carry which makes it nice for trekking.