The Lazer Compact DLX Mips Helmet is outfitted with an integrated insect net and a rear mounted LED light for extra visibility and safety. One size is all you need with this helmet. The MIPS low friction layer inside the helmet provides additional protection against rotational impacts, but doesn't interfere with the helmet's existing protective capabilities, making safe even safer! Lazer Compact DLX Mips Helmet Features Fit System: TS+ Fit System Construction: In-mold Weight - 325g (M) Uni-size Adult 54 - 61 cm Ventilation - 21 vents Integrated Insect Net Integrated LED light