From the manufacturer

A massive 4' x 6' (1.2 m x 1.8 m), in an easy-carrying, tri-fold design. Sandwich foam design for maximum impact absorption: 1" (25 mm) closed-cell, top layer, 2.5" (60 mm) open-cell center, and 1/2" (15 mm) closed-cell, base layer. 900d body fabric for maximum durability and cross-clipper logo rug for cleaning shoes. Angle cut hinges eliminate the gutter found in other designs, and a small external stash pocket and larger inner pocket provide a place to store shoes, chalk bag, etc.

Closure flap reverses to cover shoulder straps while bouldering. Plush padded shoulder straps and dual sets of drag handles give you lots of carrying options. Aluminum buckles are guaranteed for life. The Magnum also makes an awesome crag bed for car camping!

Specifications

• Open size: Open size: 47" x 70" x 4" (120 cm x 178 cm x 10 cm)
• Folded size: 47" x 25" x 13" (120 cm x 64 cm x 33 cm)
• Weight: 18.7 lbs. (8.48 kg)
• Color: black/gray