Product details: Brand: ROCKBROS Material: PC+EPS Weight: Approx. 270g Size: M(54-58cm)/ L(58-62cm) Suitable for: Unisex adults Colour: Gradient Pink(Matt)/ Pink(Matt)/ Pink(Shiny)/ Black(Matt)/ Green(Matt) Activity: Cycling Features: Safety Protection: One-piece moulded PC+EPS effectively protect your riding safety. The thickened PC shell makes the helmet structure more compact and effectively absorbs shocks and vibrations. The helmet is CE approved by the EU. We pursue higher standards to give you more safety. Adjustable helmet size: The bike helmet has an adjustment system with a rotary knob that allows free size adjustment within a certain range so that the helmet fits better on the head. The streamlined helmet shape reduces wind resistance and sits comfortably on the head. Removable inner lining: The inside of the MTB helmet is fully padded with foam to minimise friction on the head. The removable inner lining has Velcro fasteners and is easy to clean. The helmet has 17 ventilation holes that effectively improve ventilation and keep the head dry. Lightweight and beautiful helmet: The entire safety helmet weighs nuretwa 270 g to reduce pressure while riding. The helmets are available in five colours, each of which is stylish and attractive. Ionic+ silver ion lining: The item comes with a pair of Ionic+ silver ion antimicrobial liners and a pair of regular liners. The Ionic+ silver ion liners are equipped with anti-odour and anti-bacterial silver ion technology, which effectively prevents bacteria from settling in sweat and prolongs the life of the product.