I’ve been using these for well over over a year. I have to say, unlike some reviews I’ve had no trouble with the adhesive failing. The strips are only on leather bags and I cleaned the areas VERY well before applying them.
My bags tend to be heavy and I expected the strips would start to slide after an extended period of use, but no! The adhesive bin the strips is very good.
Very grippy, definitely stops the bag strap from sliding off my shoulder. I have ONE coat that the strips cannot grip. The faux fur on that single garment is so slippery that I doubt even tar would stick to it.
I’d put these on every shoulder strap I own except that the cost for postage to Australia was excessive. Great product.