Sleeping Bag Sea to Summit Hamelin Synthetic -9C Long Summer 2025
The Hamelin is a performance-oriented synthetic sleeping bag designed for comfort. Built for the backcountry, it is at home in a range of climates and conditions – especially when things turn damp. The weight-efficient Contour shape offers room to move in any sleeping position, while Layers of Revive Loft are strategically placed to maximise insulation value. The Free-Flow full length zipper with double sliders and short side zipper provide variability and customisable ventilation. Go hard but rest easy knowing the Hamelin uses RCS-certified recycled and bluesign-APPROVED materials, and each sale supports 1% for the Planet environmental partners.
The Hamelin is a performance-oriented synthetic sleeping bag designed for comfort. Built for the backcountry, it is at home in a range of climates and conditions – especially when things turn damp. The weight-efficient Contour shape offers room to move in any sleeping position, while Layers of Revive Loft are strategically placed to maximise insulation value. The Free-Flow full length zipper with double sliders and short side zipper provide variability and customisable ventilation. Go hard but rest easy knowing the Hamelin uses RCS-certified recycled and bluesign-APPROVED materials, and each sale supports 1% for the Planet environmental partners.
SKU: ASL043131-211904-ss2025
Best Use: Light trekking, backpacking (especially in wet conditions),paddle touring, car camping
Shape: Weight-efficient Contour shape – ideal for a variety of sleeping positions
Temperature Ratings:
Comfort: –3°C
Lower Limit: –9°C
Extreme: –28°C
Insulation: Recycled synthetic insulation (Revive Loft),strategically placed for thermal efficiency
Weight: 2 lb 13 oz (1263 g)
Compressed Volume: 9.6 L
Zippers:
Full-length YKK #5 side zipper with double sliders (extends through footbox)
Short second side zipper for arms-free use or venting
Zip plough prevents snags for smooth operation
Ventilation & Versatility:
Free-Flow Zip system offers custom ventilation
Can unzip fully for use as a quilt
Thermal Features:
Insulated hood
Draft collar and draft tubes to prevent heat loss
Materials: bluesign® APPROVED, RCS-certified recycled fabrics
Sustainability: Made from environmentally responsible materials; supports 1% for the Planet
User Height Fit: Up to 198 cm
Packed With: Lightweight compression sack for compact transport
Best Use
Light Trekking, Backpacking - especially in wet conditions, Paddle Touring, Car Camping
Comes With
Compression Sack
Insulation
100% RCS-certified, post-consumer, recycled, multi-Denier synthetic insulation
Material(s)
Outer: 20D bluesign APPROVED, recycled polyester with non-PFAS DWR
Inner: 20D bluesign APPROVED recycled polyester linerShape
Contour – relaxed mummy
Zip Options
YKK #5 Left sided two way full zipper + right sided two way half zipper with zip plough
Detailed description
Best Use: Light trekking, backpacking (especially in wet conditions),paddle touring, car camping
Shape: Weight-efficient Contour shape – ideal for a variety of sleeping positions
Temperature Ratings:
Comfort: –3°C
Lower Limit: –9°C
Extreme: –28°C
Insulation: Recycled synthetic insulation (Revive Loft),strategically placed for thermal efficiency
Weight: 2 lb 13 oz (1263 g)
Compressed Volume: 9.6 L
Zippers:
Full-length YKK #5 side zipper with double sliders (extends through footbox)
Short second side zipper for arms-free use or venting
Zip plough prevents snags for smooth operation
Ventilation & Versatility:
Free-Flow Zip system offers custom ventilation
Can unzip fully for use as a quilt
Thermal Features:
Insulated hood
Draft collar and draft tubes to prevent heat loss
Materials: bluesign® APPROVED, RCS-certified recycled fabrics
Sustainability: Made from environmentally responsible materials; supports 1% for the Planet
User Height Fit: Up to 198 cm
Packed With: Lightweight compression sack for compact transport
Technical Specifications
Best Use
Light Trekking, Backpacking - especially in wet conditions, Paddle Touring, Car Camping
Comes With
Compression Sack
Insulation
100% RCS-certified, post-consumer, recycled, multi-Denier synthetic insulation
Material(s)
Outer: 20D bluesign APPROVED, recycled polyester with non-PFAS DWR
Inner: 20D bluesign APPROVED recycled polyester linerShape
Contour – relaxed mummy
Zip Options
YKK #5 Left sided two way full zipper + right sided two way half zipper with zip plough