Product development / Early access

Ultralight sleeping bag liner and travel sleep sack

In development

TrailLiner Ultralight Sleeping Bag Liner

A lightweight washable liner for backpacking sleeping bags, hostels, travel and cabin stays. It adds a removable layer between the sleeper and the sleeping bag, helping simplify cleanup during repeated trips. Supplier-listed ultralight adult sleep-sack format...

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Overview

A lightweight washable liner for backpacking sleeping bags, hostels, travel and cabin stays. It adds a removable layer between the sleeper and the sleeping bag, helping simplify cleanup during repeated trips.

Supplier-listed ultralight adult sleep-sack format
Designed for travel, camping and hostel use
Washable removable sleep layer
Compact enough for a backpacking sleep kit

Prelaunch: exact dimensions, fabric composition, stock and AutoDS fulfillment must be verified before sale.

Intended use

Details are being verified before publication.

Limitations

Details are being verified before publication.

Verified specifications

Details are being verified before publication.

Care

Details are being verified before publication.

Shipping and returns

Shipping details will be published before this product is available.

Warranty

Warranty terms are being established and will be published before launch.

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Problem being solved: Hybrid routes force a choice between comfortable walking axes and efficient technical tools.
Core design idea: A restrained 55 cm curve and modular Type 2-style head support adze, hammer and pick changes without changing the core tool.
Key features: Interchangeable adze/hammer; replaceable pick; captive hardware; upper index texture; tool-free sliding handrest; steel spike.
Suggested materials: 7075-T6 aluminum; forged chromoly steel; glass-filled nylon; TPU grip.
Approximate dimensions or fit: 55 cm; moderate curve; approximately 185 mm head.
Weight target: Target 430 g.
Color palette: Storm Teal #1E5861; Deep Basalt #171A1F; Signal Sulfur #D7FF3F.
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Approximate dimensions or fit: 55 cm assembled; approximately 34 cm longest packed section.
Weight target: Target 380 g.
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Wear the contingency before you need to sleep in it.

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