Hilltop Packs D50T Ultralight Backpack Liner

Add an internal layer of weather protection for clothing, a sleeping bag or quilt with a Hilltop Packs backpack liner. Hand-built in Waynesburg, Pennsylvania, it uses Challenge D50T fabric with fully taped seams and an outer abrasion layer.

Size guide

• Small: 16.25 × 31.5 inches measured flat; listed weight 2.8 oz; supplier-recommended for 20–33-liter backpacks.
• Medium: 18.25 × 33.25 inches measured flat; listed weight 3.25 oz; supplier-recommended for 35–50-liter backpacks.
• Large: 21 × 35.25 inches measured flat; listed weight 3.85 oz; supplier-recommended for 50–70-liter backpacks.

Pack-volume ranges are fit recommendations, not stated liner capacities or universal-fit guarantees. The supplier recommends laying your backpack flat, measuring its width and choosing a liner slightly wider than the pack. Allow enough room above the contents to roll the top closed. If between sizes, the supplier recommends the larger option.

Closure and water-protection limits

The supplier instructs rolling the top 3–5 times, then clipping or tucking it. Included clip hardware is not specified. The supplier describes waterproof fabric and taped seams, but no submersion depth, duration or independent water-protection rating is supplied. Proper closure matters; do not assume protection during immersion or river crossings.

The outer abrasion layer is not a puncture-proof guarantee. The original supplier copy includes broad lifespan, cost-saving and no-leak promises without supporting test details; those are not guarantees for this listing.

Frequently asked questions

Which size fits my backpack?
Use the supplier’s recommended pack-volume ranges as a starting point, then compare flat widths and allow closure room. Small is recommended for 20–33 L packs, Medium for 35–50 L and Large for 50–70 L.

Are those volumes the liner’s capacity?
No. They are the supplier’s suggested backpack sizes. Actual usable liner capacity is not supplied.

How do I close it?
The supplier says to roll the top 3–5 times, then clip or tuck it. Clip inclusion is not specified. Follow the manufacturer’s current instructions.

Can I submerge the liner?
No submersion rating is supplied. The supplier describes waterproof Challenge D50T fabric and fully taped seams, but the listing does not establish immersion protection.

Does it have a warranty, and how do I clean it?
The supplier advertises a five-year warranty for seam failure or fabric tears under normal use. Coverage, exclusions, retailer eligibility and claims are subject to the manufacturer’s current terms. Cleaning instructions are not supplied.

This listing is for the selected liner, not a backpack or its contents.