The Sea to Summit Ultra-Sil Folding Bucket packs a 10 L water container into just 33 g and an 8.7 × 6.7 cm stuffed size, a striking capacity-to-weight ratio compared with carrying multiple water bottles or a rigid basin. The 30D siliconised Cordura nylon body with PU coating and double-stitched, taped seams keep it fully waterproof for hauling water from a source back to camp.
A stainless steel cable runs through the rim, the key detail that makes a folding fabric bucket actually usable — it holds the mouth open and rigid while filling instead of collapsing, then folds flat once empty. That combination of structure when needed and near-zero packed volume when not is the main reason to carry a dedicated bucket rather than improvising with a cook pot or dry bag.
For basecamp use, washing up, or filtering large batches of water in one trip, it is a practical addition to a group kit; its weight is low enough that solo ultralight hikers could justify carrying one too if water logistics are a recurring hassle.