Van Ruysdael glass is designed to keep the heat in, but the noise out, which means that it’s quiet indoors even when it’s noisy outside.

standard soundproofing feature

A standard feature of the thin Van Ruysdael insulating++ glass is that it is equipped with a soundproofing feature that performs better than double glazing that is three to four  times as thick. Sound insulation capacity is expressed in (Rw) dB. The higher the value, the better the sound insulation.

reference

Non-insulating single glazing (3mm): 27dB.  
Standard 25mm double glazing (4-16-5mm): 29dB. 
Van Ruysdael 5.8mm insulating++ glass: 32dB.