"WHAT IS A GUSSET?
EXTRA COMFORT WHERE IT MATTERS MOST!
A #gusset is a #diamondshaped piece of denim sewn into the #crotch area of most of our All American brand of jeans. The gusset eliminates 4 seams coming together in one spot, creating freedom of #movement and a more comfortable wearing experience. A gusset also helps disperse stress around the crotch, making the jeans more #durable and tasks like crouching easier."
https://www.allamericanclothing.com/collections/what-is-a-gusset