Sea to Summit Ultra-Sil Folding Bucket 10L

The Sea to Summit Ultra-Sil Folding Bucket is a 10-liter water-hauling bucket built from bluesign-approved Ultra-Sil 30D siliconized CORDURA nylon, with double-stitched and seam-taped construction that keeps it watertight and quick-drying. A stainless steel wire integrated into the rim holds the bucket's shape during filling and pouring. The bucket weighs 33g and packs into its own compact storage pouch at 8.7 × 6.7 × 2.2 cm, making it a practical choice for backpacking, camp water management, and Leave No Trace-conscious outdoor travel.

Shape When It Counts

The stainless steel wire rim holds the bucket open while you fill it from a stream, spigot, or water cache, so you are not wrestling a collapsing collar with wet hands. That same structure keeps the bucket stable while you pour, reducing spills at camp. When the task is done, the wire folds flat and the bucket rolls or folds into its storage pouch without tools or fuss.

Fabric Built for the Load

Ultra-Sil 30D siliconized CORDURA nylon carries bluesign approval, meaning the fabric meets verified standards for environmental and chemical safety in production. The polyurethane coating on the interior and seam tape over every stitch line give the bucket a hydrostatic head greater than 2000mm, which is more than adequate for water transport and camp filtering use. A Non-PFC DWR finish on the exterior sheds water and speeds drying when the bucket is hung or laid out after use.

Weight That Disappears in a Pack

At 33g product weight and 40.1g packed weight, the Ultra-Sil Folding Bucket adds almost nothing to a backpacking load. The packed size of 8.7 × 6.7 × 2.2 cm fits in a hip-belt pocket or the lid of a pack, so it is accessible without unpacking gear. Hanging the bucket from a branch or ridgeline also makes it a convenient gravity-filter reservoir at camp.

Features

• 10L capacity with stainless steel wire rim: holds shape during filling and pouring for stable, controlled water handling
• bluesign-approved Ultra-Sil 30D siliconized CORDURA nylon: lightweight, strong, and produced to verified environmental standards
• Double-stitched and seam-taped construction: watertight seams with a hydrostatic head greater than 2000mm
• Non-PFC DWR exterior finish: sheds water and dries quickly after use
• Packs into its own compact storage pouch: 8.7 × 6.7 × 2.2 cm packed size, 40.1g packed weight
• Hang point for gravity filtering: use at camp as a gravity-filter reservoir

Specifications

Who This Is For and Isn't

The Ultra-Sil Folding Bucket suits backpackers, ultralight campers, and overlanders who need a compact, lightweight vessel for hauling, filtering, or managing water at camp or on trail. Its 10L capacity and hang point make it practical as a gravity-filter reservoir as well as a general water carrier.

The Ultra-Sil Folding Bucket is not freestanding; it will not stand upright on its own when filled. Water above 60°C / 140°F will damage the seam tape and should not be used in this bucket. Buyers who need a bucket that stands unsupported when full should consider the Sea to Summit Nylon Folding Bucket instead.

Common Questions

Is the Ultra-Sil Folding Bucket freestanding?

The Ultra-Sil Folding Bucket is not freestanding and will not stand upright on its own when filled with water. The stainless steel wire rim holds the opening stable for filling and pouring, but the bucket requires support or must be held. The Sea to Summit Nylon Folding Bucket is the freestanding alternative.

Can I put hot water in the Ultra-Sil Folding Bucket?

Hot water above 60°C / 140°F will damage the seam tape on the Ultra-Sil Folding Bucket and should not be used in it. For water at or below that temperature the bucket's seam-taped, watertight construction handles normal camp water-hauling tasks without issue.

Why does the current Ultra-Sil Folding Bucket weigh more than older versions?

The 2026 Ultra-Sil Folding Bucket includes a stainless steel wire integrated into the rim, a change from prior models. That wire stabilizes the bucket's shape during filling and makes it easier to collect and pour water, and it accounts for the modest increase in weight over earlier versions.