Size Guide

Find your fit.

All measurements are in centimetres and refer to the garment measurements — not body measurements. If you're between sizes, size up for a more relaxed fit or size down for something closer.

The IRBN T-Shirt

Fit: Oversized — drop shoulder — boxy shape. This T-shirt is designed to be worn with volume. If you want it closer to the body, size down one.

Measurement	XS	S	M	L	XL
Length (shoulder to hem)	61	63	65	67	69
Chest (across front)	50	52	54	56	58
Shoulder width	51	53	55	57	59
Sleeve length (overarm)	20.5	21	21.5	22	22.5
Bust	59.5	59.5	61.5	63.5	65.5
Hem width	55	57	59	61	63

Fit note: The extended sleeve sits closer to the elbow than the shoulder — this is a deliberate design choice, not a sizing issue. The drop shoulder construction means the shoulder seam sits off the natural shoulder point.

The IRBN Sweatshirt

Fit: Oversized — mock neck. Cut with generous volume throughout. Size down if you prefer a closer fit, stay true for the full oversized silhouette.

Measurement	S	M	L	XL	XXL
Length (shoulder to hem)	64	66	68	70	72
Chest (across front)	59	61	63	65	67
Shoulder width	60	62	64	66	68
Sleeve length (overarm)	55.5	56	56.5	57	57.5
Bust	61.5	63.5	65.5	67.5	69.5
Hem width	58	60	62	64	66
Cuff width	8.5	9	9.5	10	10.5

Fit note: The mock neck sits close to the throat — this is part of the silhouette. The ribbed hem and cuffs will loosen slightly with wear, which is expected and by design.

How to measure

All measurements above are garment measurements taken flat. To compare with your body measurements, measure your chest at the widest point and compare to the bust measurement above — allow for ease of movement based on how fitted you prefer your clothes.

Still not sure on sizing? Get in touch — we're happy to help you find the right fit.

IRBN — ESTD. 2020