3 is a Tribe Grow Bag Combo (Velcro)

The Perfect Starter Combo. 3 x 5L (Velcro Sides), 3 x 10L (Velcro Sides) and 3 x 25L (Standard) recycled material grow bags. 

The Velcro sides make transplanting a breeze and insure minimal root disturbance and plant shock when transplanting.