The updated 2.0 version uses cotton for the absorbent layers (vs microfiber in the original version). 

• Stay‐dry interior is super soft and wicks moisture away from delicate skin
• Overlap semi-attached stay-dry inserts (backed by multiple layers of soft cotton flannel) to adjust absorbency (new!)
• Six extra layers of our soft cotton jersey are sewn inside the shell (new!)
• The waterproof outer cover prevents leaks
• Gentle elastic
• Durable plastic snaps
• 3x3 snap-down design adjusts the sizing to fit small, medium, and large sizes (approximately 8‐35+ pounds)
• Look for our trademarked trim, snug, and comfortable stretchy tabs to ensure you have an authentic bumGenius product.