I have a pair of the cheapest t-boots (the velcro ones).
When I first got them they stayed up just fine. I then washed the liners, laid them out to dry. The next day I put them back in the boots and put the boots on. By part way through the ride the boots had slipped down like crazy. Next ride I did them up tighter and by part way through our ride, they had slipped down like crazy.
I have stopped using them b/c of this. I fear doing them up any tighter cause the straps are so narrow I worry about such uneven tight pressure across the front of his cannon.
Anyone else have this problem? what did you do to fix it?