Sondico core baselayer short sleeves juniors this sondico core baselayer is great for training sessions due to this being built with mesh ventilation panels to the under arms and with a rubberised trim to the hem for a secure fit baselayer short sleeves crew neck collar rubberised trim to the hem mesh ventilation panels under the arms flat lock seams sondico branding keep away from fire shell 92 polyester 8 elastane mesh 82 polyester 18 elastane