This is a made-to-measure, toe-separated sandal sock designed for a close and comfortable fit. Instructions are written for EU 39 (21 cm forefoot circumference), but the size can be adjusted by modifying the stitch count while keeping it a multiple of 4 to maintain the 2×2 ribbing. Gauge is flexible, but a typical fingering-weight sock gauge will give the best result. Approximately 20 g of fingering-weight yarn is required for one pair. Yardage may vary depending on size and desired length.