Air vent on front and back thighs The Taichi Explorer pants are a very lightweight alternative in the ADV segment. Perfect for riding in hot weather. One thing to note is, that if you have big thighs, these may not fit you. Also, the Velcro closure at the bottom is nice, but its not going to fit over heavy duty ADV boots. Its meant more for a shorter style boot. So many ADV garments are SO heavy. These are super comfortable for long rides as well as for walking around town or hiking. Great choice!