You’re not an alpine climbing brand without your own chalk bag. Made in Canada and utilising a water-repellent polyester outer with a fleece lining. Ostrya’s chalk bag is the real deal for traversing, with reflective Ostrya logo and proudly adorned with the Canadian maple leaf flag (L’Unifolié as it’s known in Ostrya’s Montreal home). Ostrya Traverse Chalk Bag - Black