Bitcoin T-Shirts

A Bitcoin T-shirt from Bitcoin21 has no slogans and no oversized graphics — just the Bitcoin21 mark, either in orange or in the colour of the fabric. What you choose between is the cut: a relaxed Basic or a roomy Oversized.

Bitcoin Basic T-Shirt: 250 g/m² organic cotton

The Bitcoin Basic T-Shirt with embroidered logo is made from 100% organic cotton at 250 g/m². The fabric is heavy enough to wear on its own without being see-through, and reinforced double seams at the hem, sleeves and neckline make it hard-wearing. The fit is relaxed, sizes run from XS to XL, and the small orange logo on the chest is embroidered. It works under a shirt, under a jacket or by itself. Price: €30.

Bitcoin Oversized T-Shirt: 300 g/m², wider and longer

The Bitcoin Oversized T-Shirt uses a heavier fabric of 85% organic cotton and 15% recycled polyester at 300 g/m². It falls wider and longer, with enough room for air to circulate and enough weight that it does not flap. Over a long-sleeve it also works in spring. The orange logo is embroidered on the chest. Price: €40.

The same shirts, tone-on-tone

Both cuts also come in a Privacy version with the logo embroidered in the colour of the fabric. The Basic Privacy is available in white, black and navy for €30; the Oversized Privacy in off-white, navy and black for €40. For the office or a client meeting, this is the line to look at.

Which size should I order?

For the Basic, the size chart on the product page lists length and chest width in centimetres. Compare it with a T-shirt that already fits you well, and if you land between two sizes, go for the larger one. The Oversized is cut generously on purpose: we recommend at least one size down from your usual, or two sizes down if you want it closer to the body. If you are used to wide cuts anyway, your normal size gives you the intended look.

Washing without shrinking

Wash at 30 °C, inside out, with similar colours. Organic cotton does not like hot water, and turning the shirt inside out stops the embroidery rubbing against the drum. Skip the tumble dryer if you can — heat contracts the fibres and a shirt can come out half a size smaller. Washing it once before the first wear keeps the measurements stable afterwards.

Prefer a collar? Have a look at the Bitcoin polo shirts. Everything with the tone-on-tone mark is in the Privacy Collection.

Pay in Bitcoin. Alongside the usual payment methods you can pay us directly in Bitcoin — because a Bitcoin brand should accept Bitcoin.

Read more: Bitcoin clothing – the complete buying guide 2026. Why we choose durable quality and timeless basics over fast-fashion trends.