Description: Environmentally friendly material, soft and elastic, effectively adapts to the shape of the ear, making it comfortable to wear, firm and soft as feather crystal silicon. Wear comfortably; Small and gentle; Good elasticity close to the ear; Environmental protection material; Wear comfortably. Crystal clear modern design. Environmentally friendly, odorless, hypoallergenic and soft liquid silicone feels comfortable to wear. 360 degree rotating loop opening 6MM Suitable for Plantronics M70 M90 M180 M1100 M925 M975 M155 M166 M50 Blade V3200 Specification: Material: Silicone Size Chart: Size: Approx. 52x27mm/2.0x1.1inch Package includes: 2pcs large earmuffs 2pcs medium earmuffs 2pcs small earmuffs 4pcs 360 degree rotating ear hook Note: All dimensions are measured by hand, there may be small deviations. Color may vary slightly depending on the color setting of each individual monitor. Thank you for your understanding. Enjoy your pleasant shopping time \",