K12 Sports Headphones: • Neckband design: improves grip and comfort thanks to its design with soft materials. Lightweight and ergonomic headphones, perfect for activities with daily movement and sports activities. The helmet Headphones K12 Sport: • Neckband design: improves grip and comfort thanks to its design with soft materials. Lightweight and ergonomic headphones, perfect for activities with daily movement and sports activities. The helmet Material: Thermoplastic; Alloy: Metal; ABS, metal alloy, rubber.;; Colour: Rose Gold;