The oval shape of the convex light barrier is designed to help a stoma that is difficult to manage -- for example

Waterproof Surface

Stoma Opening: Oval Up to 3" x 2-1/2" Cut-to-Fit

Loud and Extra Loud sound settings ensure the alarm is heard

Kimberly Clark HUGGIES® Snug and Dry™ Baby Diaper, Size 1, Big Pack, 108 Count - Discontinued by Manufacturer Sold By:Case of 108 The oval shape of theWet to dry in 10 Seconds: Removes wetness from diaper liner in 10 seconds or less to help keep baby dry and happy. Snug, dry and comfortable: Keep baby happy and dry for up to 12 hours day or night with Huggies Leak Lock system. Huggies quilted liner: Helps absorb messes to keep your baby feeling comfortable, dry and happy. Wetness indicator: Makes it easy to check when it's time for a change. For 8 to 14 lb baby.