Here's what other sites are saying:
The Black Diamond Tracer Helmet is designed for the superior lightweight protection and comfort needs of alpinists and climbers moving fast. Tracer Helmet Features:Mesh-covered vents offer protection from falling objectsMolded EPS foam with a hard polycarbonate shellVentilation where you need it mostWeight : 245 g, 8.6 ozSize: Medium 22-23.5''
- Mountain Hideaway
Description of Black Diamond Tracer HelmetFor fast and light, the Tracer is the ultimate in head protection. Built with co-molded expandable foam injected into a polycarbonate shell, it offers excellent structural integrity. Plenty of vents provide good airflow and the top vents are mesh covered to keep debris off your head. Its available in three sizes, each with a one-handed quick-adjust system. The Kids Tracer is sized as an adult small and features younger graphics. CE and UIAA-certified.FeaturesWeight 245gSmall 49-57cm 19.3-22.5in.Medium 56-60cm 22-23.5in.Large 59-63cm 23-25in.
- US Outdoor Store
So light and unobtrucive you'll hardly know you're wearing it, the Black Diamond Tracer Helmet uses a minimalist design sleek aesthetics to keep you looking and feeling cool while providing superb protection from fall impacts.
- Mountain Gear
For featherweight protection while rock climbing, ice climbing, and mountaineering, this helmet offers a one-hand micro-adjust system so you can stay quick and secure.