I bought this bag, along with a wide version of the Bishop15, from REI RE/Supply to determine which one to keep… I’m keeping the Bishop so this Shasta is up for grabs! A lightweight, 3-season solution when moisture management is critical. A lightweight, 3-season solution for overnight outings where moisture management is critical: the ShastaT 15F is a roomy sleeping bag with a performance edge that optimizes warmth in a protective shell. Whether you’re embarking on a backcountry hut trip or backseat-bunking at a crag-side campground, this synthetic-insulated sleeping bag uses long-lasting, semi-recycled materials that keep you warm and dry. Using a spacious core with a narrow footbox, it comfortably concentrates body heat where it’s needed to put your mind at rest. Lightweight 20 denier ripstop and Thermal. Q recycled insulation for durable warmth even in wet conditions. Shaped draft collar and adjustable insulated face gasket effectively keep warm air in and cold air out. Contoured foot-box follows natural foot position for maximum warmth and comfort. Compression sack and mesh storage bag included. Reliable and lightweight #5 YKK® zipper with anti-snag slider and construction for easy entry and exit. Two-way zipper for ventilation options. Full length insulated draft tube prevents heat loss and cold spots at the zipper. Left-hand and right-hand zipper options available for zip-together functionality. Performance Plus Mummy cut is efficient, warm and comfortable. Fabric Lining: 20D Mini Rip Polyester. Fabric Body: 20D Mini Rip Polyester. Fabric Weight: 43 g/m² / 1.27 oz/yd². Weight: 3 lb 3.7 oz / 1466 g. Bag Shape: Performance Plus Mummy. Bag Fill Weight Regular: 2lbs 5.5 oz / 1064.4g. Sleeping Bag Compressed Volume Long: 711 in³ / 11.7 ltr. Max User Height Long: 78 in / 198 cm. Shoulder Circumference Long: 64in / 163cm. Hip Circumference Long: 58in / 147cm. Actual weight may vary. Weight based on sleeping bag only. Weight does not include compression sack and storage sack weight.