The difference between the two:

1. The adhesive version is made of all aluminum material and is firmly attached to the phone with seamless adhesive at thefour corners. It will not leave any adhesive when disassembled, making it a cost-effective choice.

2. The double-layer rubber model has a double-layer structure, with aluminum material on the outside and SEBS rubbermaterial on the inside. There is also a layer of rubber protection inside the hard shell, which can provide good shockresistance and buffering effect. The appearance is slightly thicker than the adhesive tape, requiring higher protection. Userswho frequently disassemble it are recommended to choose the rubber model.