The vest should wrap around your body as snugly as possible. This will keep it from slipping much when your dog rebounds off you with its paws. But don’t overdo it. It’s important for your vest to be comfortable so you can breathe easily.
The most important dimension for choosing a vest is C (around your hips).
Make your selection based on the dimensions in the table. If possible, try on a vest in person. You can arrange it at any disc dog event. Either contact us directly (write or call in advance), or ask any disc dog player outside of the Czech Republic. At freestyle competitions, you will definitely find some helpful players with Czech Black disc dog vests who will lend you one to try on.
If you discover that the size you chose does not fit, you can exchange it. And you will only pay for shipping.
If you do send your vest back, we ask that you pack it properly. Folding the vest lengthwise will make creases in the neoprene that will still be visible later. In practice, these creases do not matter, and a used vest will have them anyway after having been packed in a backpack for the first time. Creases do not affect the function of the vest at all, but we still ask that you repack the vest the same way it was originally packed.