Sea to Summit Ultra-Sil Compression Sack 20L

The 20-litre Sea to Summit Ultra-Sil Compression Sack helps reduce the space taken up by clothing and other soft gear inside your backpack or travel bag. Compression straps draw the contents together evenly. Depending on what you pack, the volume can be reduced by as much as two thirds.

Lightweight organisation inside your luggage

The sack uses bluesign®-approved Ultra-Sil 30D nylon with a PFC-free water-repellent treatment. An attached lid makes packing straightforward and helps keep the straps organised. According to the manufacturer, this 20-litre version weighs 96 g and measures 24 × 24 × 47.5 cm before compression.

• Capacity: 20 litres
• Weight: 96 g
• Fabric: Ultra-Sil 30D nylon
• Colours: High Rise, Blue Atoll and Zinnia
• For soft, compressible items inside luggage

Water resistance and packing

This compression sack is water resistant, not waterproof. Its seams are not sealed and the closure is not a roll-top. Use additional suitable waterproof protection for moisture-sensitive equipment in heavy rain or where contact with water is likely. Distribute soft items evenly, tighten the straps gradually and keep sharp edges away from the lightweight fabric. The size graphic also shows other capacities for comparison; this listing is for the 20-litre version.

In-stock items usually ship from our warehouse within 1 to 3 working days. If the item is in stock in one of our stores, you can also pick it up there free of charge. In Pfronten this also works for items that are only in stock in Ronsberg: we bring them over, which usually takes 2 to 4 days. The pickup note above and the checkout show where and when you can pick up. Skis with binding mounting take a little longer: we mount them carefully and let you know as soon as your set is on its way. Personal advice is available by appointment in our store in Ronsberg. Details in our shipping policy.

We accept all major credit cards, PayPal, Klarna and Shop Pay. With Shop Pay you can pay for your purchase in interest-free instalments.

Statutory warranty rights apply, plus the manufacturer's guarantee where one is granted. You can return unused items within 14 days of receipt; register the return in your customer account. We refund the purchase price of the items minus a 5 € return fee (6.90 € from abroad); you receive the return label from us. Skis mounted according to your details are excluded from exchange. Details in our return policy.