Put to the test by On's elite team of trail athletes the new On Ultra Vest Pro is a high performance lightweight vest made for training or racing a long way. Lightweight and tough, the breathable mesh material is tailored to provide a precise fit that stays put, the patented-pending closure system allows you to adjust the vest's placement to best suit your body. Non-stretch materials minimise bottle bounce for a smooth and comfortable ride over any terrain.

This pack offers 1L of hydration between dual front-riding 500 ml Hydrapak flask and space for a hydration bladder (not included) on the back. Minimalist construction strips this pack down to the bare essentials, whilst still giving you plenty of storage space.

Front pockets offer space to stash nutrition, accessories, and essentials with ease. Two stretch pockets below the flask holsters offer storage for gels, gloves, or smaller gear. With space for a hydration bladder (not included) on the back the rear back zippered pocket pocket gives you quick access to larger apparel and nutrition. With sealed seams the removable dry pack with water-resistant zipper.