From Fehr Trade:
Make your perfect yoga wardrobe with a top and bottom designed for movement. Start with a loose fitting teeshirt with knot-detail sleeves, upper back yoke, and semi-open back, worn knotted in the back for a tighter fit during exercise or left loose for cooling down. Alternatively, a shorter option features a hem band with knotted side detail. Pair it with comfy bottoms featuring slouchy pockets, waistband with hidden elastic and optional tie, crotch gusset, and banded or tied hem in capri or full length and you’re ready to hit the mats in style!
Advanced Beginner sewing skills are required for both the top and bottoms, though some experience sewing lightweight knits is expected.