Light-emitting mode: long light - fast flash - slow flash (continuous long light time up to 40 hours, shiny up to 50 hours, battery can be replaced)
XS = Width 1.5CM * Chest Length ( 32 - 39 ) CM
S = Widht 2.0CM * Chest Length ( 32 -40 ) CM
M = Width 2.5CM * Chest Length ( 38 - 50 ) CM
L = Width 2.5CM * Chest Length ( 43 - 60 ) CM
XL = Width 2.5CM * Chest Length ( 60 - 70 ) CM
1. Due to the light difference, the color may be slightly different.
2. Please allow slight differences due to manual measurement.