Smith Level Mips Ski / Snowboard

My husband bought this for my son but it didn't fit. We bought it from a store on vacation and now we can’t return. Brand new in box. From the website: Protection · Hybrid shell construction blends a durable exterior with a lightweight in-molded shell for durability where you need it most while keeping the helmet light · Zonal KOROYD® coverage for lightweight, energy-absorbing and ventilated impact protection · Mips® Brain Protection System reduces rotational forces caused by angled impacts to the head · Select colorways offered without Mips® system · Certification: ASTM F 2040, CE EN 1077:2007CLASS B Fit / Integration · Designed for ultimate integration with Smith goggles for maximum comfort and venting · AirEvac ventilation system integrates with Smith goggles for fog-free lenses · VaporFit Snow dial adjustment system offers270-degree fit adjustment with the turn of a dial · Ionic+® antimicrobial lining offers sweat-activated odor control Features · Regulator climate control allows easy, one-handed vent adjustment · 20 vents · Removable Snapfit SL2 ear pads add warmth and are audio-chip compatible · Aleck® audio systems compatible · Weight (Size M, Mips®): 19 oz / 550 g