The Alpinestars KMX-9 v3 Suit is the perfect choice for both entry and intermediate level racers. Boasting an advanced, dual-layer construction for protection and lightness, this suit also has a 100% polyester toweling liner for premium comfort. Additional driver-friendly design details include an angled front opening, stretch panels on the back, shoulders and waist for an optimized fit, and breathable mesh material on the crotch and underarms. Available in adults and kids sizes. FIA 8877-2022 Grade 1 homologated. Not fire-resistant, therefore only for karting use.