These gloves require about 50 g of fingering-weight yarn in each main and contrasting color(s). Any superwash yarn will do, but wool blends with nylon is the best choice; as those yarns are especially durable and form-stable.
The recommended gauge (35 x 35 in 10 cm) is for size small only. For other sizes, adjust your gauge accordingly.
For sizes L and XL, use sport-weight yarn!
The fingers can be knitted plain in solid color, or stranded. Stranded fingers are less stretchy and may fit a little snug, especially if you have larger hands - switch to larger needles in that case.
Instructions are written for circular needles (magic loop method); adjust if using DPNs.