| Size | Chest circumference (cm) |
| S | 92 |
| M | 100 |
| L | 108 |
| XL | 116 |
| XXL | 120 |

Arming doublets were worn under plate armor from the 15th century onwards. The laces on the doublet make it possible to attach harness components directly to the doublet. The garment was a development of the gambeson and the 14th century pourpoint, and is padded on the inside to protect the body from blows to parts of armor.
In the late Gothic style (1450-1500), voiders and a mail skirt (gousset) were often added to the arming doublet; In late 15th-century Italy, the doublet also became a fashionable garment among citizens, probably suggesting status and chivalry. This example consists of three layers of fabric — an outer layer of 330gsm cotton canvas, a filling of polyester and an inner lining of cotton — with lacing holes on hem and sleeves.
This doublet forms the supporting base under plate armor during re-enactment and show fighting, and is also suitable as a protective layer in HEMA-training.