Sea to Summit Trek Women's Down Sleeping Bag -1C|30F Regular

Product Information

The Sea to Summit Trek Women's Down Sleeping Bag brings together the comfort of a tapered-rectangular mummy shape with the versatility of a dual-zip ventilation system, making it your perfect companion for trekking, backpacking, travel, or camping adventures. The Free Flow Zip System features a full-length side zip and a secondary foot box zip, allowing you to increase ventilation on warm nights or open the Trek completely flat like a duvet. Premium down insulation ensures you stay warm and snug on chilly nights.

Shaped specifically for female adventurers, the semi-rectangular cut is narrower at the shoulders and wider between the hips and knees, giving you freedom to move in any sleeping position — whether you curl up, sprawl, or lie on your side — without compressing the insulation. Additional strategically-placed insulation enhances warmth exactly where it’s needed, ensuring comfort even in colder conditions.

The Trek Women's Down Sleeping Bag is designed to keep you cosy in any sleeping position or weather. A shaped hood and oversized zip draft tubes help lock in warmth while keeping cold air out. Internal baffles — vertical across the chest, horizontal across the lower half, and box-wall construction throughout — ensure consistent thermal performance, preventing cold spots. An internal pocket provides a safe place for your phone, GPS, or other small valuables, while the innovative QuiltLock system allows you to attach a Sea to Summit quilt over the top for modular versatility. For couples or shared adventures, the Trek can zip together with any men’s Sea to Summit sleeping bag to form a comfortable double sleeping system.

This sleeping bag is built for long-lasting performance in the outdoors. It is insulated with ULTRA-DRY 650+ loft duck down (85% down cluster), certified by the Responsible Down Standard (RDS) for ethical sourcing. The lightweight, durable shell and lining are made from 100% recycled 20D polyester and treated with a PFC-free water repellent coating, helping to shed moisture and extend the life of the bag. For convenient packing and travel, the Trek comes with a lightweight Ultra-Sil compression bag and storage cell, making it compact enough for backpacking yet ready for all your adventures.

The Free Flow Zip System lets you regulate your temperature easily: unzip fully to convert your sleeping bag into a quilt-style comforter, or partially open for maximum airflow on warmer nights.

You don’t have to compromise comfort for warmth. The Trek Women's Down Sleeping Bag combines roomy, body-mapped insulation, thoughtful construction, and flexible ventilation, giving you maximum comfort for a great night’s sleep wherever your adventures take you. Lightweight, compact, and modular, this sleeping bag is ready to become your favourite backpacking companion.

Technical Specification