With a soaker RTS
SHORTIE Sizing -
Small - 9-12 lbs approx.
Medium- 13-18lbs approx.
Large 19-25lbs approx.
XL - 26-32 lbs approx.
2XL- 32-38 lbs approx
3XL- 38 -44lbs approx.
*these are estimates each baby is shaped different. It also depends on what you are putting under it.