Chris Sharma, pro-climber and athlete for Prana clothing, speaks to us about the Calculus Pant, and why it is one of the ultimate climbing trousers for practical wear. Sharma, who has worked with the brand for many years, shows us some great features of these trousers, including not only deep pockets so nothing falls out, but also a harness-accessible zip pocket for when you need your essentials on the rock. There is also a small loop for keeping your brush attached to you, which as Sharma knows, is pretty useful on longer routes. Overall this is a versatile, durable and Sharma approved climbing pant.
