Review on Ultralight Sleeping Bag Liner By The Friendly Swede - Perfect For Hotel And Camping, Travel Sheets, Adults Sleep Sack, Microfiber Cotton Feel Travel Sleeping Bag - Pocket-Size With Stuff Sack by Ryan Noble

My daughter has an allergy to certain laundry detergents. I purchased this so that when she sleeps over someone's house, she can use this sack to protect her from a reaction. It is very lightweight, nice for summer. In winter, you can cover with blankets. She is completely enveloped within this, and there is a flap into which you can insert a pillow. It comes with a bag for easy storage and transport. This washes well, and is pretty easy to get back into that bag. I bought one for myself so when I travel, I have an extra clean layer between me and hotel sheets. Great product, good price and quality.Update - since my initial review above, I purchased two additional sleep sacks. We throw them in our carry-on bag when we fly and it provides a light, but warm cover if cold in the airport or on the plane. The only tricky thing about the bag liner is trying to quickly fold it to replace it in the bag. One really needs to be able to lay this out flat to fold it properly.