Size guide

Measure a garment you already own and like. That beats guessing every time.

Heavy T-Shirt: regular fit, true to size.
Oversize Shirt: cut wide on purpose. Size down for a normal fit.
Basic Unisex Hoodie: regular fit, unisex sizing.
Organic Basic Hoodie: slightly boxy, true to size.

Every product page carries its own measurement table with the exact flat measurements for that garment. That is the number to trust.

Between two sizes? Take the larger one for hoodies, the smaller one for oversize shirts.