Composition finder for outdoor artists, urban sketching artists and photographers. Credit Card Size - Compact and design fits into any purse, camera bag or portable art kit. Waterproof and crystal clear acrylic. Great outdoor activities for kids; no more screen time. Find the perfect proportion finder for any composition. In the world of photography, the Golden Triangle is a powerful tool for adding dynamic tension and interest to an image The carving has many clear auxiliary lines, allowing you to create a sense of harmony and balance Made of clear acrylic, Portable, credit card sized, fits in purse or camera bag. With it, everyone can become a master composer Colour:White Material:Acrylic Package Contents: 1 set of viewfinders (pack of 4) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.