Hign-concerned Chemical: None : Type: Veneer suitable_for: adults, students usage_scenarios: Toddler Room, Dorm Room These adjustable non-slip mattress gaskets include 4 pieces designed to secure furniture firmly in place. Crafted from dependable carbon steel, they provide dependable performance by preventing movement and slippage. Great for households with kids, elderly family members, college students, and those seeking a stable sleeping environment like hotel rooms or bedrooms. Specifications: Material: Carbon steel Product size: about 3.1x2.4 inches/7.87x6.1cm Product weight: about 670g 1.Stable Sleep: This non-slip grommet provides a secure hold on your mattress, minimizing movement and delivering dependable anti-shift protection for a consistently stable sleep experience 2.Versatile Frame Adaptation: Optimal stability control provides secure mattress positioning, with flexible fit and size adjustment for versatile bed frame compatibility within an adjustable range, improving user convenience 3.Heavy-Duty Strength: Constructed from robust carbon steel, providing dependable durability and deformation , while maintaining dependable performance for years 4.Tidy Setup: No hassle mounting feature provides rapid setup and immediate sleep bed stability, providing a seamless experience without complex procedures 5.Stable Sleep Solution: Delivers dependable nightly stability and fits effortlessly into diverse bed setups, providing compatibility with both traditional and modern beds through adaptable design Color: Black Package Contents: 4 pieces * non slip mattress gaskets Only the above package content, other products are not included. Note: Light reflection 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.