Opening and closing with a twisting motion that seals chalk inside and shrinks the volume for easy transport, the small Arc'teryx Aperture chalk bag keeps chalk from escaping when you're not using it.

• ApertureTwist and snap closure seal tight, reducing chalk loss during transportation
• Reinforced rim keeps the bag open for easy access to your chalk
• Injection-molded belt attachment/slider doubles as a bottle opener
• Adjustable waistbelt
• Brush holder