A Travel Sheet is an extremely lightweight and roomy sleep sack or sleeping bag liner. These versatile sheets are excellent as a warm weather sleeping bag or a rectangular sleeping bag liner. Compact and lightweight, Travel Sheets are ideal to bring to hotels, youth hostels, alpine huts, boats, planes, trains, or anywhere else you might travel. Silk-Cotton combines Egyptian cotton and silk, our two most luxurious fabrics. The result is an exquisite and durable 55% silk / 45% Egyptian cotton blend that is slightly heavier and stronger than pure silk. Just like silk it responds well to changing temperatures, is soft to your skin and has a small packing size.