Lightweight Hydration Running belt, £15, Nike

Run handsfree with two removable bottles of water attached to your person at all times

Let’s face it, you can lump all the ultra-zero-freeze-arctic-chill-frost tech you want into a product, but nothing will keep you as cool as drinking the required amount of water.

The issue comes when you have to run with an annoying bottle in your hand for an hour, or when you opt to leave your bottle somewhere in the park while you run around it, only to have it mercilessly nabbed.

Enter Nike and their Hydration Running belt, allowing you to run handsfree with two removable bottles of water attached to your person at all times. Sorted.