Adhesive gel sheet on the back of beak has its strengths & weaknesses depending on the material.
We hope you find this video helpful in selecting a case.

1st → Deff Ultra Slim & Light Case DURO
https://amzn.to/3CkWBT8

2nd → Deff CRYTONE
https://amzn.to/2Xrdm0c

3rd → Polycarbonate case

4th → TPU case

5th → Apple Silicone case
https://amzn.to/3EsVrqk

👇 Compatibility：◎
★ Polycarbonate

★ Aramid fiber
【Deff】Ultra Slim & Light Case DURO
https://amzn.to/3CkWBT8

👇 Compatibility：○
★ Polypropylene
【CASEFINITE】Frost Air
https://amzn.to/3GRSVKE

★TESiV
【Deff】CRYTONE TESiV Clean Case
https://amzn.to/3yB1AOX

👇 Compatibility：△
★TPU
TORRAS Shiny Series
https://amzn.to/32a772P

👇 Compatibility：×
★ Tempered glass
https://amzn.to/3p5ifGU

★ Silicon
Apple
https://amzn.to/3sdm27l