ZS Scuba Boots BT550

I don't know much about these boots or scuba diving, I do know my friend thought she was going to start a new hobby then figured out she didn't like it as much as she thought she would. Zippered bootie Heavy duty #10 zipper Durable traction sole Watertight construction inside and out Cold water zipper dam Heel and toe caps for maximum durability I don't know the size so I will provide a pic of the length. I think the 6 inside the zipper area may be referring to the thickness. If you happen to be checking out this item & know anything about it please leave me a comment. Let me know if you have any questions. Feel free to make a reasonable offer. Thanks for looking and sharing.