light picture frame

The photos on my pinboard were all curling and deformed so I wanted a simple frame only to reinforce the edges. As I didn&#39;t find anything fitting I designed one myself. It&#39;s super lightweight (< 12 g) and fits standard 10 cm and 9 cm 3:2 prints (exact dimmensions 101x149, 88x129, 100x148 (for Canon Selphy prints)). If you need any other dimmensions please let me know and I&#39;ll easily add them.