Best cold water swimming kit: six essential items

This long-sleeved costume strikes a balance between a wetsuit and a regular one-piece. Made from a natural plant-based rubber, it is a sustainable alternative to neoprene.

These breathable felted-wool boots will keep your feet toasty. Handcrafted in Russia, they can be teamed with a practical rubber overshoe, in either red or black, that slips on and off easily.

A functional, spacious, waterproof backpack with a separate 15in laptop compartment. Made from polyurethane, it has a sleek gummed finish, fleece lining and reinforced back padding.

Suitable for most conditions, these comfortable goggles have anti-fog lenses with both UVA and UVB protection. Polarised and photo-chromic lenses are also available.

Yeti’s durable 18fl oz bottle has double-walled vacuum insulation to keep drinks pipinga hot. Made of stainless-steel, it is 100% leakproof with a fully rotational lid.

This thermal-lined, weatherproof boiler suit has a relaxed fit, designed for wearing over a swimsuit or underwear. Lightweight, with a micro fleece lining, it is available in navy, green and black.