(HOLD DOORS STEADILY) These non-slip door stoppers are designed with a ribbed base and small protrusions on the surface to increase friction and strong grip. They are useful and effective for holding doors steadily in place and preventing doors from slamming, sliding, and slipping. (FIT PERFECTLY) These door holders fit all surfaces, such as wood, carpet, tile, cement, and so on. They can hold wooden doors, metal doors, glass doors, self-closing doors, laminate flooring, heavy doors, household doors, standard doors, large doors, commercial doors, etc. (MANY OCCASIONS APPLICABLE) These door protectors are available for various doors in different places—bedrooms, kitchens, bathrooms, kids' rooms, offices, warehouses, school stores, etc.—to keep the door open at a right angle and prevent doors from slamming, pinching fingers, and trapping pets in rooms. (ADJUSTABLE HEIGHT) These non-slip door wedges can be stacked to change thickness for different clearances. 0.59 inches/1.5 cm for one stopper, and 6 door stoppers can be stacked together to fit maximum gaps up to 3.54 inches/9 cm to accommodate wide spaces between the door and floor. (SAFE, DURABLE, AND ECO-FRIENDLY) These sloped bases are made of qualified and superior rubber. They are odorless, non-toxic, and recyclable to stay healthy for your family and protect the environment. The rubber material is so soft that it won't damage or scratch the door or floor, but it is strong enough to hold the door. The door wedge stoppers are well-designed to hold the door open steadily to create a facilitating space and a safe circumstance, especially for children, the elderly, and pets. QUIETER EFFECTIVELY AVOID THE WIND, THE NAUGHTY CHILD OR ANIMALS SUDDENLY CLOSING OR OPENING THE DOOR AND MAKING A LOUD NOISE TO SCARE THE SURROUNDINGS. THEY ARE ALSO A GOOD ASSISTANT TO KEEP THE BABY SLEEPING. Color: Silver Gray Material: Rubber Size: 9.5*1.5*4cm Package Contents: 6 * Door Wedges Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.