At a mere 235 grams, The Petzl Meteor III helmet is one of the lightest on the market. The innovative adjustment system means almost anyone can get a comfortable fit. With excellent ventilation, it's equally at home at the local crags as it is on long alpine routes. Lightweight, low profile and very well ventilated (the most ventilated climbing helmet available). Adjustable chinstrap, nape height and headband for an extremely comfortable fit. Headband adjustment folds into the shell for compact storage and ease of transportation. Expanded polystyrene absorbs impacts. Compatible with VIZION face shield. Headlamp attachment with 4 optimally placed clips. Specs: Weight: 235 g (8.3 oz) One size: 53 - 61 cm Sold with transport sack CE / UIAA Colors: Orange, Green, White Materials: Expanded polystyrene foam liner Thin polycarbonate external shell Polyester webbing straps