Use a jersey and shorts that already fit well. Lay them flat and compare the measurements below.
How to measureJersey: measure straight across the chest, then from the shoulder to the bottom hem.
Shorts: measure across the waistband laid flat, then from waistband to bottom hem.
Half chest and half waist are flat widths, not full body circumferences. All values are in centimeters.
Between sizes? Choose the larger size for a more relaxed fit. Jersey and shorts sizes can differ.