Sea to Summit Ultra‑Sil Dry Bag 13L (Grey) — larger‑capacity ultralight waterproof storage for multi‑day adventures and organised packing.

The Ultra‑Sil 13L Dry Bag in Grey from Sea to Summit is intended for travellers and outdoor enthusiasts who need a roomy, reliable waterproof solution without the weight penalty. Made from bluesign®‑approved 30D Ultra‑Sil fabric reinforced with CORDURA® yarns, it gives strong abrasion resistance for its class and a favourable strength‑to‑weight profile. The semi‑translucent fabric makes contents visible at a glance so you can locate spare layers, food kits or electronics quickly. A Hypalon non‑wicking roll‑top and taped seams provide trustworthy water protection in rain, wet campsites or river environments.

This larger bag’s base shape improves stability and reduces rolling while fitting neatly into duffels and pack compartments. The slippery fabric finish facilitates quick packing and removal, and the PFC‑free DWR encourages water beading with reduced chemical impact. At just 47 g the 13L Ultra‑Sil offers substantial usable volume for multi‑day trips while remaining light enough to carry as primary waterproof storage — a solid choice for backpackers and expeditioners who demand organised, dependable kit protection.

What We Love

We appreciate how the 13L balances generous capacity with ultralight performance — it holds a lot yet barely adds weight. The translucent shell reduces rummaging, the taped seams and Hypalon roll‑top deliver dependable waterproofing, and the base shape improves pack stability. It’s an essential organiser for longer trips.

Features:

• Bluesign®‑approved 30D Ultra‑Sil fabric with CORDURA® yarns
• Semi‑translucent shell for quick content identification
• Hypalon non‑wicking roll‑top closure and taped seams
• Base design prevents rolling and improves packing efficiency
• PFC‑free DWR finish

47

22 x 19.6 x 43.3

13

30D Ultra‑Sil (CORDURA® yarn)

Grey