The Redeemer 2Vi Mips is Sweet Protection's time trial helmet, developed with Uno-X Mobility and aerodynamic engineers from Formula 1. It is built for time triallists and triathletes chasing seconds.

The shape is designed to work with the rider rather than on its own. Air enters an intake duct at the stagnation point, accelerates through a closed laminar flow duct and exits at the trailing edge, where the widened tail smooths the transition onto the rider's shoulders. Sweet ran eight prototype iterations through the wind tunnel at Silverstone Sports Engineering Hub and 100 hours of CFD analysis. Underneath sits the 2Vi platform, a variable elasticity shell with a pre-preg carbon rib structure and a Mips Air low friction layer.

Key features

• 2Vi platform with pre-preg carbon rib structure and Mips Air rotational protection
• Laminar flow bypass duct and intake duct to cut overall drag
• Flush fitting magnetic visor, supplied in clear and smoke
• 360 Occigrip fit system with on-the-fly height adjustment, ponytail compatible
• Fidlock one-handed magnetic buckle
• Meets and exceeds CE EN 1078
• 450g

Two sizes, S/M for 55 to 58cm and L/XL for 59 to 61cm. Supplied with fit pads, a carry bag and both visors. Size affects the aerodynamics here, so talk to us if you are between sizes.