If you're looking for a light but durable foam climbing helmet then look no further, the BD Vision MIPS helmet checks all the boxes.  

• MIPS Technology for added protection against the rotational motion transmitted to the brain from angled impacts to the head
• EPP + EPS + ABS shell combo creates most durable foam helmet in Black Diamond line-up
• Low-profile suspension system
• Integrated headlamp clips
• Removable / reverse Velcro pads
• Helmet Construction: In-mold
• Shell Material: Polycarbonate
• Size: S/M: (fits 21-23 inches)
• Weight: S/M: 240 grams