Offering a more spacious fit than the standard Helium range, the Helium GT series is designed for extended use, providing exceptional comfort for those who prefer extra room to move. Filled with 289g of DOWN CODEX-approved duck down with a minimum 700-fill power and wrapped in a high-performance, 100% recycled Helium 20D outer fabric, the Helium GT 250 is an ultra-efficient, lightweight, and packable sleeping bagperfect for minimalist adventures in warm weather. The slant-baffle construction maximizes warmth, enhances packability, and prevents down from shifting, ensuring consistent insulation and eliminating cold spots. A four-baffle footbox concentrates warmth around the feet, while a five-baffle hood optimizes comfort and keeps the down securely in place. Inside, the 100% recycled Supersoft 20D lining fabric with Fluorocarbon-free DWR provides breathability and durability for long-lasting comfort. A full-length Gemini™ zip baffle effectively reduces heat loss and is reinforced to prevent snagging. The low-profile magnetic Lode Lock™ closure and adjustable collar drawcords enhance convenience, even in low-light conditions. Designed with a roomier GT Fit, the Helium GT maintains the tapered shape of the Alpine fit while offering a broader profile without compromising performance. With a Good Night’s Sleep Temperature of 1C (34F), the Helium GT 250 is an excellent choice for extended warm-weather backpacking and camping. Temperature ratings Comfort: 7C/45F Comfort Limit: 2C/36F Extreme: -12C/10F Dimensions Length Inside: 192cm Max User Height: 182cm Weight: 690g Pack Size: 22x19x17cm Features 100% recycled HELIUM 20D outer shell is very light and highly breathable with FC free DWR 289g of 90-10 Pure Duck Down with a minimum fill power of 700 GT fit is roomy comfortable and allows for a variety of sleeping positions Slanted box-wall baffles and stitch-through baffles Mid-level side seams 5 baffle anatomically shaped hood 4 baffle anatomically shaped and offset foot-box Full length Gemini zip baffle with 140cm zip and integrated neck collar with Lode Lock closure 100% recycled Supersoft 20D lining fabric with FC free DWR Supplied with waterproof roll-top stuff-sack and storage cube