This product is either discontinued or we cannot get that from suppliers.
Startech HDDSLEV35, Silicone, Hard Drive Protector, Drive Size 3.5", Clear, Included 1 - 3.5in Hard Drive Protector Sleeve.
This two piece silicone hard drive protector sleeve provides a layer of sturdy protection against potential shock/impact damage for your 3.5in hard drives. When enclosed with larger top portion of sleeve, they provide added stability and protection for 3.5 in.