3 times sharper than normal scissors, durable quality with optimal comfort. Always keep the ideal angle of 30 degrees by the Bernoulli curve blade. You can EASILY cut a Cardboard, PET bottle, Milk carton, Cloth, Flowers, Packing tape and etc... Long-lasting and smooth feeling The insert plastic ring reduces friction and keeps the blades from rickety movement so you can expect the smooth and comfortable feeling or these scissors to last a long time.