Astral PFD's

Measure the widest part of your chest.

XS (Layla only) = 27"-31”
S/M = 31"-37”
M/L = 38"-44”
L/XL = 45"-51”

Otter(youth) sizing: 

fits 50-90 lbs.

Airbelt sizing:

Universal - Chest 31-50 inches / 76cm-132cm