Yes, most of them do! When you buy a kit, you can select the size you are interested in in the size drop-down menu. If there is no drop-down menu to select the size, it means that this pattern was designed as a single size by the type of garment.
Depending on the size you choose, we will automatically adjust the number of skeins required as well as the price of the kit.
The pattern you will receive within your kits includes the instructions to make all the sizes we offer for one specific model, regardless of the size you have selected when placing your order.
Within the description of the kit, in the "measurements" tab, you have access to the measurements for each available size.
If you need a different size other than those specified, we recommend viewing this post showing how to adapt your pattern: How to adapt a pattern
For more details: How do I know what size to order?