frumguy I have one and highly recommend it. Its a talitania and this is the secret… Regular taleisim are simply that bit too wide! I didnt realize until I got a non slip which are narrower meaning there’s less excess tallis on your shoulders so there’s less to slip down. Try one on and you’ll see immediately what I mean! Mine used to drive me crazy but now BH I can daven in peace, slip free.
mik5 your knot needs tightening. It takes between 10-30 seconds and most sofrim will happily do it for free.
Anybody else have any problems? Uncle Shticky will endeavor to resolve them. Only $100 a time.