What's the minimum order for custom stainless water bottles?

Orders typically start around 25 units; smaller runs are sometimes possible. Mixed colours (silver, black, white, brand colours via powder-coat) within the same bottle style are fine in a single order.

Single-wall or double-wall — which to choose?

Single-wall for everyday water-only use and lower per-unit cost. Double-wall vacuum-insulated for any drink where temperature matters (hot tea/coffee, cold water in summer). Most corporate orders go double-wall because the recipient uses it daily across various drinks.