Right size and shape. Ribs definitely help keep soap pucks in place.
Ease, speed, and quality of lather.
I’ve historically always had bad razor burns. But that stopped as soon as I’ve started using this product. I’ve gone like 5 years of alway using it. A container lasts a long time. Highly recommend it.
"The Astra Superior Platinum 'Green Pack' is the ultimate five-star shaving blade because it perfectly balances high-end sharpness with an incredibly smooth, platinum-coated glide that gives you a professional, irritation-free shave every single time for a fraction of the cost."