Sorry not sure on the brand of those. Pretty sure I got them at Gander Mountain in Corsicana. We just put em on with the velcro & then a wrap of duct tape at the top (1/2 on the boot 1/2 on the dogs leg). The Nylon / Cordura type are the easiest and really the cheapest too but they don't stop the thorns. We had a few sets of the tennis shoe type that actually have a rubber shoe tread on them and really liked them the first two seasons, on season 3 they started falling apart.
What causes you to lose dog boots, is usually mud / water. Other than that, these nylon / cordura boots stay on pretty good.
Since Photbucket sucks, No sig pic.