Label uniforms, campwear, quilts, and washable projects with crisp, permanent marks. This indelible ink writes smoothly on fabric labels, seam allowances, twill tape, and care tags, then withstands laundering to keep names and notes legible. It is ideal for school items, shared laundry rooms, and guild swaps where clear identification prevents mix‑ups. Keep one in the sewing kit so sizes, ownership and care details stay readable through repeated wash and wear cycles.