OPI Soft Gel Extensions have a pre-etched surface, making them prep-free & ready to go right out of the box. Our patent pending shape covers the height of Apex relative to the height of cuticle and height of the tip & the position of Apex relative to total length – our Golden Ratio. The edges are designed to be ulta thin and flexible near the cuticle contact area. Our tips are available in 16 inclusive sizes across 5 Shapes in medium length.