5+mm Wetsuits: Credentials for Single Digit Water
Below 12°C the ocean starts checking credentials. The 5/4 is the answer: five millimeters of thermal lined rubber through the core, four in the arms, most builds hooded, all of them sealed against water that makes the uncommitted stay home.
This is the suit for Ireland, Scotland, the North Sea, and the Atlantic's coldest months. The waves are often the best of the year and the lineups are spectacularly empty. There is a connection between those two facts.
When You Need a 5/4 Wetsuit
The 5/4 covers water from roughly 6 to 12°C, which is Ireland and the United Kingdom for most of the surfable calendar, Scandinavia in anything but high summer, and the Bay of Biscay at its January worst. At these temperatures warmth is not comfort, it is session length. A cold surfer surfs badly, decides badly, and goes in early. Five millimeters of thermal lined neoprene is the difference between a forty minute survival exercise and a two hour session in empty waves.
Hooded or Not
Most Vissla 5/4 builds come hooded, led by the North Seas cold water flagship, because heat loss through the head is real and a separate hood always finds a way to flush at the collar. An attached hood seals the system. If you run warm or your winters are milder, a non hooded 5/4 with a separate hood gives flexibility. Either way add 5mm boots, and gloves below 10°C, from the cold water accessories range.
Built for the Cold, Not Adapted to It
Vissla 5/4 suits are cut as cold water suits from the start: linings chosen for heat retention, seams taped for single digit duck dives, rubber that stays soft when the car thermometer disagrees with your plans. Winter is the secret season. Keep it.
