Atomic Redster STR F5 25/26

The Atomic Redster STR F5 is the top choice for lighter, smaller racers with narrow feet who demand the precision and power of a true World Cup ski boot. With its 150 flex and 91 mm narrow racing fit, it delivers uncompromising performance. No surprise that World Cup champion Sofia Goggia chooses this model. The World Cup Race liner with Ankle Retention System ensures strong support and a responsive connection between foot and shell – for unmatched precision on the course.

The shell, made of thin yet ultra-stable Formula plastic, is resistant to temperature changes and designed so lighter athletes can flex it powerfully in all conditions. The adjustable Redster tongue system allows for a customized instep fit, while the super-stable Redster Racing sole – 5 mm thicker than standard soles – delivers direct power transfer and grip. With features like Power Control and the 55 mm Professional Dual Strap, the STR F5 is built for peak performance. Don’t wait – those who choose the STR F5 gain World Cup technology and the edge to win.

Features

• 150 flex for uncompromising race performance
• 91 mm narrow racing fit
• World Cup Race liner with Ankle Retention System
• Formula plastic shell: strong, thin, and temperature resistant
• Adjustable Redster tongue system for optimal instep fit
• 55 mm Professional Dual Strap for maximum power transfer
• Power Control: adjustable forward lean and stable cuff-shell connection
• STR wall thickness: thin yet powerful for progressive flex
• Redster Racing sole: 5 mm thicker for direct power transfer