Choosing the right size is important for a comfortable fit. Our easy sizing chart for BRAINBOX will help you understand the fit of our garments in relation to your child’s weight and height – which means you’ll have peace of mind that you’re purchasing the right size, every time.


Treat your baby to the finest organic cotton with this bodysuit from Baby BrainBox. It's 100% organic baby rib cotton, combed for softness and comfort. It's designed for easy on-and-off and fits all babies – both boys and girls. Triple-seat snaps for bottom/nappy closure. Image/Design is printed on transfer paper and then applied on top of the fabric with a commercial grade heat press.

6M62 - 685.7 - 7.4
9M68 - 747.4 - 9.2
12M74 - 809.2 - 11.1
18M80 - 8611.1 - 12.4
24M86 - 9212.4 - 13.6


The softest, smoothest, best-looking t-shirt available anywhere. We use Fruit of the Loom™ T-shirts, which are made with 100% fine jersey cotton (Tri-fit tees contain 50% polyester / 25% cotton / 25% rayon) combed for softness and comfort. All t-shirts are printed using a commercial-grade vinyl, which lays down soft, durable, full color spectrum prints.

4T98 - 104
14 - 15
6T110 - 11615 - 17

122- 128

17 - 19