The belt is of very good quality and works well with the trousers I purchased. I had thought I might be ok without as the trousers fitted well. However, they did start to fall down slightly when walking which was very irritating. The North Face trousers I previously used had a belt incorporated. I appreciate the high quality of the belt but having to purchase one has pushed the price of the trousers up by nearly £20! I think the belt is an essential not an option.