I am a size 9 in US womens, a 40 european and 25cm japanese. I have had several 24"x24" pictures, framed and solid wood unframed being held up by these with no issues for days now. I have waterproof cases, & dustproof cases, & high impact resistant cases. Id like to see something like this on more headphones for sure. The longer, grippier tips Ive tried just barely stretch over the chubby ear-stem, and then are too long and soft - theyll bend and block the sound. 5 would be reasonable IMHO. The rose gold is so shiny and pretty! I love the flower pattern on my belt. For the purposes of this review, I?m comparing them to the models-AirPod prosSony WF-1000XM3 IAll of the above are Wireless earbuds with noise cancellation. These are her new favorites.