3D Printed Dual Can Insulator

Height: 15.5 cm; diameter: 8.5 cm; net weight: 220 g. Compatible exclusively with standard 12oz (355ml) cylindrical aluminium beverage cans. Core structure formed via high-resolution 3D printing using engineering-grade polypropylene composite — offering balanced stiffness, low thermal conductivity, and resistance to abrasion and mild chemical exposure (e.g., sunscreen, insect repellent). Dual twist-top lids feature multi-turn threading and tapered sealing lips for progressive compression and long-term gasket integrity. The Ultra Chill System integrates three passive thermal management elements: (1) air-gap insulation between inner and outer walls, (2) minimal-contact internal geometry reducing conductive pathways, and (3) full-can coverage with zero exposed top rim — all working together to extend chill duration beyond typical single-can coolers. The slide-to-release system uses friction-optimised rails and gravity bias — requiring no maintenance or recalibration. Used successfully at UK music festivals, Welsh mountain walks, Dutch canal-side picnics, and German Autobahn rest stops — fits standard cup holders, straps easily to backpacks, and cleans with damp cloth only — no disassembly needed.