One of the advantages of our glasses is that the arms are thin. This stops the arms from creating a gap when used with earmuffs allowing sound to penetrate which is particularly important for sharp, loud noises such as at a gun range.
Our glasses also don't have reinforcing on the top to make them rigid. This is to ensure that they fit a multiple range of head sizes and more importantly, don't squeeze tight onto the head causing headaches. This makes them appear lighter than others but rest assured that they are ANSI compliant as well as CE (Europe) and ASNZS (Australia and New Zealand), so they will definitely not break if a projectile was to hit them (Within ANSI testing standards).
In fact, most of our customers report that they are so comfortable that they forget they have them on. I'm sure once you give them a go you will be satisfied but appreciate that they may not be exactly what you are looking for.