Double-Wall 1000ml Stainless Flask

This 1000ml flask has external dimensions of 19 × 11 × 9.5 cm (7.48 × 4.33 × 3.74 inches) and uses dual-layer 304 stainless steel with vacuum insulation for superior thermal retention. Both body and lid are made from non-reactive, BPA-free 304 stainless steel — highly resistant to corrosion and staining. A fine-mesh tea strainer is permanently mounted inside the lid for consistent infusion control. Leak resistance is ensured via CNC-machined threads and a compression-fit silicone seal. Built for resilience in daily UK life, the lid may be cleaned in the dishwasher, though the vacuum body should be hand-washed; its finish remains intact despite exposure to rain, wind, and routine handling.