The Astro Lite series offers a plush 3.5-inch thickness, a premium fabric suite, and lateral baffles. The 20-denier fabric shaves valuable grams without sacrificing comfort. Astro Lites lateral baffles are less noticeable than vertical baffles, and prevent the sides of the pad from curling around your body. The large Pillow Baffle at the head end of the pad ensures that your pillow doesnt slide off in the middle of the night, and gives a couple extra inches of height for supreme sleeping comfort. The Laylow zero-profile, multi-functional, micro-adjustable valve offers convenient inflation, personalized comfort, and deflation. The included Vortex pump sack inflates Astro Lite in two to three fills, and doesn't introduce moisture into your pad.