Full-length leggings are a type of fitted trouser that extends from the waist to the ankle, providing complete coverage of the legs.
7/8-length leggings are a style of fitted trouser that extends from the waist and ends just above the ankle, providing almost full coverage of the legs.
Flared leggings are a style of trousers that are form-fitting from the waist to the knee and then flare out towards the ankle, combining comfort & a stylish look.