Features: brand new and high quality Packing label: the arc side version is a paper label, and the enhanced version is a silver dragon label. Color: the arc version is grayish white, and the enhanced version is pure white. Hardness: arc edge version hardness is lower than the enhanced version. Slip: the enhanced version is more slippery than the arc version. The product not only won'for t scratch mouse pad, but also makes the movement of the mouse smoother and more stable to the Rounded Edges mouse skates of other makers. Specifications: for: Aerox 3 Wireless Mouse Arc edge design Color: White thickness:appprox. 0.6mm Material: PTFE Size:appprox. 9x7cm/3.54x2.76in Quantity: 1set Package Includes: 1Set x Mouse Feet note: This product is a replacement mouse feet. After removing the original mouse foot sticker, clean the bottom for shell by the alcohol cotton which is attached in the package, and then paste the new mouse feet on. After removing the transparent protective film on the mouse feet, carefully align the feet groove on the mouse bottom for shell, then apply slight pressure to fit the foot. Do not repeatedly stick and peel off the foot stickers.