Robens Spire I -1°C Sleeping Bag | Lightweight 3-Season Mummy Bag

Lightweight Warmth for Three-Season Adventures The Robens Spire I -1°C Sleeping Bag is a versatile mummy sleeping bag designed for trekking, camping, backpacking, and outdoor adventures from spring through autumn. Featuring OneThermo® synthetic insulation, a body-contoured profile, and a range of heat-retaining features, it provides an excellent balance of warmth, comfort, and packability for cool-weather nights. Why You'll Love It Excellent Warmth-to-Weight Ratio → Body-contoured mummy design reduces excess space and improves heat retention Three-Season Versatility → Comfort rated to 4°C with a lower limit of -1°C Performs in Damp Conditions → Synthetic insulation continues to insulate when exposed to moisture and condensation Comfort-Focused Design → Soft brushed lining enhances comfort and moisture management Packed with Practical Features → Compression sack, internal pocket, anti-snag zip, and hanging loops included OneThermo® Synthetic Insulation The Spire I uses Robens' OneThermo® insulation, providing: Reliable warmth in cool conditions Effective performance when damp Good loft retention Fast drying characteristics Excellent durability for regular outdoor use Ideal for UK camping, trekking, backpacking, and multi-day adventures. Temperature Ratings Comfort: 4°C Limit: -1°C Designed for: Spring camping Summer mountain nights Autumn adventures Trekking and backpacking trips Cooler UK conditions Key Features 3D Hood Profile → Improves warmth and comfort around the head Redesigned Neck Baffle → Reduces heat loss and cold draughts Differentiated Hood Drawcords → Easy adjustment by touch in the dark Shark Fin Foot Box → Extra insulation around the feet Full-Length Insulated Zip Baffle → Prevents cold spots along the zip YKK Two-Way Auto Lock Zip → Reliable operation and ventilation options Anti-Snag Zip Guard → Smooth opening and closing Brushed Polyester Lining → Soft feel with excellent moisture transport Internal Valuables Pocket → Secure storage for essentials Compression Stuff Sack Included Hanging Loops for Storage & Drying PFAS-Free Construction Specifications Weight: 1450g Packed Size: 30 × 22 cm Shell Fabric: 50D 300T Polyester Taffeta Insulation: OneThermo® Lining: 230T Microfibre Polyester Zip: YKK Auto Lock Two-Way Zip Materials: Shell: 100% Polyester Lining: 100% Polyester Filling: 100% Polyester Perfect For Camping Backpacking Trekking Bikepacking DofE Expeditions Wild Camping Three-Season Adventures Robens Spire Sleeping Bag Range Robens Spire I -1°C Sleeping Bag → Lightweight three-season performance Ideal for campers and backpackers seeking warmth, comfort, and packability without excessive weight.