Double-wall vacuum insulated stainless bottle (500-750ml)

Sourcing unresolved.

A double-wall vacuum insulated stainless steel bottle in the 500-750ml range. Independent bottle tests measured double-wall construction at 12.9C after 24 hours from a near-freezing start, in line with a below-15C-at-24h floor for cold contents. We do not claim 24-hour hot retention: double-wall construction isn't built for it, and no test we found supports that claim. Reported failure points on tested double-wall bottles include lid and gasket leaks, powder-coat chipping, and seam dents, so check the seal on arrival. Food-contact documentation (BS EN 1186) is required from the supplier before any food-safe or BPA-free claim can be made, and hasn't been confirmed yet.

Spec

Evidence

• waterbottleadvisor.com 46-bottle test — double-wall avg 12.9C after 24h from ~1C start
• bottlepro.net 30-bottle test — dual-probe methodology, hot 165F->150F endpoint

Failure modes we checked

lid/gasket leaks, powder-coat chips, seam dents

Compliance

UK food-contact docs (BS EN 1186) required from supplier before any food-safe/BPA-free claim

How we verify

Every spec on this page is checked against independent sources before listing. See methodology.