Softer: Die-cutting selectively decreases foam density in high-pressure areas. * More Supportive: Full-density foams in low-pressure areas provide increased support where it’s needed most. * Lighter, More Compact: While increasing comfort, an overall decrease in the volume of foam makes it more efficient to pack and carry. * Weight: (Reg) 3lbs 7oz / (Large) 4lbs 8oz / (XL) 5lbs 7oz * Dimensions: (Reg) 20"x72"x3" / (Large) 25"x77"x3" / (XL) 30"x77"x3"