Sizing guide
Our standard patch is 1.5 x 1.97 in (38 x 50 mm). It fits most children's frames, plastic or metal, and around eight in ten orders go out at this size without any measuring at all.
When to measure
If the frame is for a toddler, if it's an adult frame, or if the lenses look noticeably rounder or squarer than average, take thirty seconds and measure.
How to measure
Take the glasses off. Lay a ruler with inches/millimetres across one lens and measure it at its widest point, left edge to right edge of the glass. Then measure top to bottom at its tallest point. Two numbers, both in inches/millimetres.
