Sea to Summit Trek TkII - Regular Wide bright blue/denim

A rectangular down sleeping bag built for three-season travel, camping, and trekking with moisture-resistant insulation and versatile ventilation options.

The Sea to Summit Trek TkII Regular Wide is a tapered rectangular sleeping bag filled with RDS-certified 650+ Loft ULTRA-DRY Down™. The wide cut provides extra sleeping room, and the bag's construction is designed to maintain consistent insulation distribution across a broad temperature range. Suited for globe-trotting use where packability and thermal reliability matter.

Features

• RDS 650+ Loft ULTRA-DRY Down™ insulation resists moisture absorption for consistent thermal performance

• Vertical chest baffles and side block baffle construction (60/40 fill ratio) prevent down migration and eliminate cold spots

• Two-way #5 YKK side zip and separate foot zip — converts to a quilt and allows ventilation control

• Zip coupling system for pairing with a compatible bag

• Oversized zip draft tube with anti-snag materials

• Includes Ultra-Sil™ compression bag and storage cell

Technical Specifications

• Shell: 30D Nylon

• Lining: 20D Nylon

• Insulation: RDS 650+ Loft ULTRA-DRY Down™

• Temperature rating: Comfort -1°C / Limit -8°C / Extreme -25°C

• Dimensions: 183 × 172 × 161 × 122 cm

• Packed size: 20 × 46 cm

• Weight: 1.16 kg