What you need:
US size 6G (4mm) crochet hook
US size 8H (5mm) crochet hook
125 - 150 yards total of one color for a solid halter top
Tapestry Needle

Colors:
Motif: Sage Green - ~8 g
Color A: Light brown - ~62-80 g
Color B: Olive - ~5 g
Color C: Dark brown - ~4 g