Hair Extension New Best 21/36 refers to a high-quality hair extension product, likely indicating the length and possibly the hair type or texture. Here’s a breakdown of what this description may mean:

1. "New Best"

This suggests that the hair extensions are from a premium or upgraded collection, offering superior quality in terms of:

Softness & Shine – Smooth, silky, and natural-looking.

Durability – Long-lasting with proper care.

Tangle-Free – Minimal shedding or matting.

2. "21/36"

This likely refers to the lengths available in the set:

21 inches – Medium-long length (shoulder to mid-back).

36 inches – Extra-long length (waist-length or longer).

Some brands offer multi-length packs for styling versatility.

Possible Hair Type:

Virgin/Remy Human Hair – High-quality, cuticle-aligned for a natural look.

Synthetic Blend – Affordable, heat-resistant options (if synthetic).

Texture: Straight, wavy, curly, or body wave (depending on the product line).

Features to Expect:

✔ Seamless Blending – Matches natural hair effortlessly.

✔ Multiple Attachment Methods – Clip-in, tape-in, sew-in, or glue-in options.

✔ Heat-Friendly – Can be styled with curling irons/straighteners (if human hair).

✔ Reusable – Can last months with proper maintenance.