Big Agnes sleeping pads are designed to provide years of comfortable nights in the backcountry. The air chamber pads have gained a huge following due to their light weight and small packed size. Insulated Air Core pads – winner of the prestigious Editor's Choice Award from Backpacker magazine in 2004 – take the best features of the popular Air Core and add PrimaLoft™ synthetic insulation to create the ultimate air chamber pad. Features: Light and compact three season pad, with 2.5" of comfort PrimaLoftTM eco: synthetic insulation made from 50% recycled materials used in all 20" wide pads M3 synthetic insulation used in the 25" wide pad I-beam construction eliminates welded seams to reduce cold spots and ensures quick inflation/deflation, consistent air flow and stability 20" pads: Durable, lightweight 50D nylon diamond rip-stop top and bottom 25" pad: Durable, 70D nylon top and bottom Internal polyurethane coating Add a closed cell foam pad in colder temperatures for extra insulation Non-breakable brass valve with plastic coated EZ-FlateTM mouthpiece Store unrolled with valve open Includes stuff sack and repair kit Each pad individually inflated and tested EZ-FlateTM Valve instructions: Twist black part of valve counter-clockwise to open. Blow into valve to inflate. Hold gray portion of valve in mouth while spinning black portion clockwise to close. Specs: Temp Rating: 15 degrees F Rectangle 20" x 66" x 2.5": 22 oz Rectangle 20" x 72" x 2.5": 24 oz Rectangle 20" x 78" x 2.5": 27 oz Rectangle 25" x 78" x 2.5": 36 oz Mummy 20" x 60" x 2.5": 18 oz Mummy 20" x 72" x 2.5": 21 oz Mummy 20" x 78" x 2.5": 23 oz Fabrics: 20" pads - Diamond nylon rip-stop with PU coating 25" pads - Nylon with PU coating PrimaLoft Eco™, 50% recycled synthetic insulation used in the 20" wide pads I-Beam Construction eliminates welded seams to reduce cold spots and ensures quick inflation/deflation, consistent air flow and stability