The Hamelin Synthetic Sleeping Bag -1C|30F by Sea to Summit is where performance meets practicality for the all-weather adventurer.

Built for backcountry versatility, this bag brings comfort to every climate thanks to strategic layers of recycled Revive Loft insulation providing maximum warmth where you need it most. The weight-efficient Contour shape offers ample room for side-sleepers and restless wanderers, while the technical hood and draft collar keep the cold at bay. Take control of your comfort with the Free-Flow zip system, featuring a full-length YKK #5 main zipper with double sliders extending through the footbox, plus a secondary side zipper for arms-free functionality.

From damp conditions to chilly evenings, the Sea to Summit Hamelin Synthetic Sleeping Bag -1C|30F delivers reliable comfort with eco-conscious construction, featuring RCS-recycled and bluesign-APPROVED materials as part of Sea to Summit's 1% for the Planet commitment.

• Weight-efficient Contour shape ideal for side-sleepers and various sleeping positions
• Strategic Revive Loft insulation placement maximizes core warmth
• Full-length Free-Flow zip system with double sliders for customizable ventilation
• Technical hood and draft collar for superior temperature regulation
• ISO-tested temperature rating of -1°C for reliable performance
• RCS-recycled materials and bluesign-APPROVED construction
• Converts to a quilt for versatile use