The KOO Open Sunglasses in the medium size exemplify a harmonious blend of style, performance, and functionality for cyclists and outdoor enthusiasts. With a focus on cutting-edge design, these sunglasses feature a medium fit that strikes a balance between coverage and a snug, comfortable feel. The high-quality lenses offer superior optical clarity, ensuring excellent vision in varying light conditions. The frame design provides ample ventilation to prevent fogging during intense activities. KOO includes two lenses with each Open: dark grey tint for bright sun and a nearly-clear tint for heavily overcast days, including a semi-rigid case, and additional storage bag with microfiber cloth. The adjustable nose piece and temple arms contribute to a customizable fit, enhancing overall comfort during extended wear. The KOO Open Sunglasses not only offer protection against harmful UV rays but also exhibit a sleek and modern aesthetic, making them a popular choice for those who prioritize both performance and style in their eyewear for outdoor pursuits.