Therm-a-Rest Men's ProLite Mattress
The ProLite is the lightest, most compact self-inflating mattress available.  Its new redesign features a streamlined shape along with lighter fabric and foam to make it even lighter than the original ProLite 3.  It's ideal for 3-season backpacks, climbs and treks where light weight and durability are a priority.  The women's version provides added warmth for cold sleepers