The Everest Ice is a great winter camping sleeping bag with expedition-ready features such as Invista Thermolite Extra insulation, ergonomic head gasket and foot box, oversized draft tubes and neck collar for added protection in the most extreme conditions. May be zipped together with other compatible bags. Specifications: - Size: 90" x 34" x 22" (230 x 86 x 55 cm) - Shape: Mummy - Construction: Three layers on top and two layers on bottom - Outer shell: Soft ripstop nylon - Lining: Pongee Pro - Filling: 2.7 lbs (1200 g) of Invista Thermolite Extra - Zipper: #8 YKK 2-way, reversible puller, auto-lock Stuff Sack Cap Compression bag - Total Weight: 5.8 lbs (2.6 kgs)