Weve put out backpacks up on it weighing probably a total of 30lbs without issue. These are probably the most comfortable wedges I have purchased. The adhesed quickly and I was able to immediately hang the lightweight curtain and cafe rod from it. I then repainted the inside for corrosion protection (it was an off day so who cares that I wasnt able to use it for 24 hours). The roof rack works great, easy to install all for about $350 vs. Perfect for my 9 month old son who is crawling and learning how to walk. My TREBLAB J1 pair would break up at that distance, but the Fly 9 reception remained solid and clear. I haven?t tried any other AirPod pro cases for comparison, but my main concern when I ordered this was the bulky shape. They stay on my feet, are comfortable to wear all day, and are almost indestructible. Will buy again as I slim down!