want better recording listening room bass strap? Then don't hesitate, our sound-absorbing low frequency trap and cube trap can meet your needs. Thick sponge material, better sound insulation and sound-absorbing, which will provide you with good service and support your repeated use. Features - Color: Grey -Material:Sponge - Size: 15.00X15.00X15.00cm,24.00X12.00X12.00cm/5.89X5.89X5.89in,9.43X4.72X4.72in -Together with the other sound treatment accessories, consisting of a wide band absorber, the effect is very good. -Applied to , piano room, drum room, room, instrument rooms, ktv, meeting rooms, home theater, etc. -Our sound absorbing corner blocks help to create a quiet environment for small and medium-sized rooms. -Professional, durability and effective, improves vocal clarity and acoustics of your room. -These low frequency traps allow you to practice musical instrument or watch movies without disturbing anyone. Package list: 12 x corner low frequency cottons 4 x cub sound absorbing cottons