SIGG sports bottle, £19,

Outdoor types will know Sigg bottles have been around for years, but this latest ‘sports’ incarnation features a ‘wide mouth’ design which allows you to top up your tipple with ice cubes — and makes for easier cleaning. 
Made from a single sheet of aluminium and available in myriad colour options, some with a ‘fluted’ body for better grip, the biggest attraction 
is that they’re recyclable and reduce the landfill waste of plastic bottles. I’ve had an old Sigg for nearly two decades, so the investment makes sense. JK

PROS durability, saves waste
CONS initial outlay