Men's 4mm wetsuits bridge the gap into cooler water — serious warmth with the flexibility to keep riding hard. Northern Watersports stocks men's 4/3mm full suits, chest-zip, zip-free and hooded options for kitesurfing, wing foiling and surfing through the cooler months. The 4/3 is a UK favourite for autumn and mild winter sessions. Get the fit right and you'll stay warmer for longer. Fast UK delivery, free on orders over £60.