SKU: SS22120 Weighs: 405g (excluding bag) Liner Type: Mummy Shape Liner Treatments: Odour Control Therm-a-Rest's Synergy Sleeping Bag Liner is a nice-to-the-touch product that will upgrade your sleeping bag's insulation value as well as keeping it clean, although using a liner makes getting in and out of sleeping bag… Synergy Sleeping Bag Liner