【Safe and Eco-Friendly】The sound insulation board is made of 215kg/m3 high density and eco-friendly polyester fiber, non-toxic and formaldehyde-free, which have an great advantage of reducing and absorbing noise. Safe to breathe and touch,it's safe for adults, kids, and pets! | 【Easy to Install】Self-Adhesive Design, no tools or materials are required for installation! The Soundproof Wall Panels with glue on the back,Just peel off the protective film and stick it to the walls ,door and ceilings | 【Multi-Color and Beautiful】These noise acoustic sound panels come with various colors which can be mixed and match.This noise reduction panels adopts 45°Chamferin beveled edge design, it can leaves no gaps in installation, sound absorbing panels not only can absorb noise, but also can decorate the wall. | 【Wide Applications】Excellent acoustic treatment for many occasions, not only for live sound treatment on studio and office walls, but also for recording studios, home studios, home theaters, home offices. | 【Satisfied Purchase】 We're very confident that you'll love our self-adhesive acoustic panels. “Contact Seller” if you are not satisfy with the purchase or have any questions.Our excellent customer service will leave you with no worries after you buy it.