CONBOLA Heavy Duty Suction Cups 2 Pieces with Hooks Upgraded Car Camping Tie Down Suction Cup Camping Tarp Accessory with Viscous Silicone Strong Power for Car Awning Boat Camping Trap.(2 pcs)

Got a pair and one does not stick at all! Will return immediately

Se ajustan muy bien a la superficie y tienen buena succioón

Great bit of kit without being too big for travel. Grips firm, I feel I could scale the North Face of The Eiger using these. Well priced and delivered on time

Fantastic! Stayed stuck for 2 weeks and still going strong! The suction is VERY strong, it takes Hercules to pry them off, and that's a good thing. These are NOT wimpy things that will come loose and fall of in a few minutes like all the others I've tried. I stuck them on the inside of my SUV's windows in the cargo area and attached bungee hooks and cargo netting pulling on them with a LOT of weight, 150 pounds of stuff pulling against them. It was asking a lot of them to hold that much weight & pressure with the straps pulling tightly on a long 2000+ mile week-long road trip. But they held perfectly! What a nice surprise they never came off even once, not loose at all, those babies were stuck and not going anywhere. I have not tried them on other surfaces but for clean glass in your car even with temp changes it holds incredibly strong! UPDATE: They are STILL stuck tight after ONE MONTH! I finally took them off and it was hard to pry them off, as in very hard, but that makes them good. One thing you will want to do is make sure you keep the plastic caps they come with covering the suction cups, as you will need to put them back on over the cups when you take them off whatever they were stuck to. This is because the inside of the cups are sticky with an adhesive type surface and without the covers they would get covered with stuff immediately and that would surely hurt their sticking next time you use them. So keep those caps, they are attached but if you cut them off like I did, make sure you keep them!

These things really suck. They adhere to a flat smooth surface and it takes a lot of force to pull them loose.