NWT. Never used Topo Designs chalk bag. This is an older version that has a thicker canvas-like fabric rather than the newer ones that use a light nylon. A well-built essential piece of climbing gear, with a dropped cinch closure and large widemouth opening. This bag allows you to easily chalk up while on the ground or halfway to the sharp end. A soft internal fleece lining means chalk stays inside the bag instead of falling out and all over your gear. Widemouth opening Removable webbing belt with side-release buckle Internal fleece lining