●Material: biodegradable material made of natural hardwood instead of plastic. ●STANDARD DIMENSIONS: Conforms to the normal dimensions required for golf practice, top cup diameter: 0.4 inches. ●PERFECT DESIGN The natural hardwood tees feature a thin hardwood texture that limits the resistance of the bat and allows for a smoother stroke. ●High quality: durable for long-lasting use, virtually unbreakable. ●SATISFACTION GUARANTEE We offer a 30-day return and exchange right for a completely risk-free purchase.