Size Guide

LayerOne is meant to fit closely to your body so it stays invisible under your outer shirt. Here's how to get it right the first time.

How to measure

Chest: Wrap a tape measure around the fullest part of your chest, under your arms and across your shoulder blades. Keep the tape level and snug.

Length: Measure from the top of your shoulder straight down to where you'd like the shirt to end.

Measure over bare skin for the most accurate result.

Size chart

Size Length (cm) Chest (cm)
S 67 90–94
M 69 92–98
L 71 98–102
XL 73 102–106
XXL 75 106–110


Between two sizes?

Prioritise the measurement for your chest, rather than your height.

We recommend you order DOWN a size for the most invisible look.

Elias is 176cm (5'9) and 86kg. He wears a size XL.

Adam is 183cm (6') and 80kg. He wears a size L.

Samson is 178cm (5'10) and 74kg. He wears a size M