Sea to Summit Ascent -1ºC Sleeping Bag – Regular

The Sea to Summit Ascent -1°CSleeping Bag is a versatile, high-performance bag designed for a wide range of climates and adventures. Packed with technical features and thoughtful construction, it’s ideal for multi-day treks, weekend camping trips, or chilly nights in the mountains.

Filled with 750+ Fill Power Goose Down with a PFAS-free Ultra Dry Down treatment, this 2.5-season rated sleeping bag provides excellent warmth and improved water resistance in damp conditions. The relaxed mummy fit is shaped to allow a natural sleeping position, while remaining light and compact enough to take anywhere. Vertical chest baffles prevent down from shifting as you move throughout the night, and horizontal leg baffles maximise thermal efficiency.

On cold nights, tighten the technical hood, secure the draft-tube–protected zippers, and let the premium down keep you warm. For warmer conditions, the triple-zip Free-Flow system offers superior ventilation or opens the bag flat as a quilt. An opening footbox and fully open zippers add further ventilation, functionality, and freedom of movement, while an internal pocket keeps your phone or valuables secure and close by. Whether you’re seeking warmth in freezing temperatures or versatility on warmer nights, the Ascent -1C Down Sleeping Bag combines technical innovation with comfort, making it a reliable companion for a variety of outdoor adventures.