Feature: Best for controlling sound reflections in small rooms. Gives you a more enjoyable sound by effectively controlling harmful reverb and echo. Suitable for recording studios, control rooms, offices, vocal sheds, etc. Specification: Material: High density Sponge, Soundproof and flame retardant Size: 30 x 30 x 2.5cm Qty: 10Pcs Color: As the picture showincludes:10 x Soundproof Sponge About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.