The listings state the covers use TPU (thermoplastic polyurethane) together with a hard PC (polycarbonate) component alongside the TPU shell.
They’re described as shock‑absorbent/shockproof with a hard PC reinforcement, anti‑scratch and dust‑resistant, and are reported to have undergone military‑grade drop testing.
Top and bottom covers are secured to the charging case with premium adhesive strips designed to keep the pieces firmly attached. The product also includes a heavy‑duty, anti‑rust carabiner and keyring for clipping and carrying the case—these aid portability but are not the primary attachment method to the case.
Descriptions highlight a heavy‑duty, full‑body design with a shock‑absorbent TPU shell and hard PC reinforcement. They’re marketed as shockproof, anti‑scratch, dust‑resistant, and military‑grade drop tested. Additional features noted include premium adhesive strips to keep top and bottom attached, tactile cutouts for buttons, and a heavy‑duty, anti‑rust carabiner/keyring.
