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OANRO StudioDiscover our story and get in touch.
Our storyA simple way to measure yourself and compare with any size chart before you order.
Lay a sweater or shirt that fits you well flat on a table. Measure across the chest from armpit to armpit and double it, then measure the length from the top of the shoulder to the hem.
Match your numbers to the size guide on the product page. If you're between two sizes, take the larger one for a relaxed fit or the smaller one for a closer fit.
Measure around your head just above the ears and eyebrows. Most adults are between 54 and 60 cm; adjustable caps cover that whole range.
Use “Ask about this product” on any product page — a real person replies with the exact measurements.
Updated: 22 October 2026