Sidney clip-on hair topper with hand-tied welded mono base. Premium construction for a natural, breathable fit. Base: Hand-tied welded mono Base size: 13.5cm × 8.5cm (5.3" × 3.3") Hair: 100% human hair Lengths: 14" and 16" Attachment: Pressure-sensitive clips The welded mono construction provides durability and a realistic scalp appearance. The compact base size is perfect for targeted coverage at the crown.