Ysivonu Straight 12A Human Hair Bundles — 4-Pack (18/20/22/24 in) Natural Black, 100% Brazilian, Double-Weft

Ysivonu 12A straight human hair bundles are 100% raw Brazilian virgin extensions sold in four double-weft bundles (about 400g total) offering natural black, tangle-free length and salon-style styling versatility.

These straight bundles are cut from young donors and processed without chemicals, preserving one-direction cuticles and a smooth, glossy finish. Each pack contains four double-machine-weft bundles designed to give a full head with minimal shedding and long-lasting wear. The natural black color can be heat-styled, colored, or chemically treated like your own hair, and the recommended lengths include popular options such as 18, 20, 22 and 24 inches.

How do these bundles hold up through styling and color treatments?

Because the hair is raw, unprocessed Brazilian virgin hair with intact cuticles, it responds well to heat styling, highlighting, bleaching, and coloring when handled carefully. Avoid excessive overlapping heat and always strand-test before dramatic color changes.

• One-direction cuticle reduces tangling and maintains shine.
• Can be straightened, curled, bleached, dyed, or permed.
• Double machine weft minimizes shedding during installation and daily wear.
• Recommend strand test and professional coloring for best results.

How much hair do I get and will four bundles be enough?

Each set contains four bundles weighing around 400g total, which is generally sufficient to create a full, voluminous look for most head sizes. Four bundles provide fuller density and thicker ends compared with three-bundle sets.

• Four bundles included — about 400g combined weight.
• Suitable for full sew-ins, quick weaves, and custom install styles.
• Longer lengths may appear less dense; consider additional bundles for very long styles.
• Lengths commonly chosen: 18", 20", 22", 24" for layered or uniform looks.

What makes the weft and cut quality reliable for everyday wear?

The bundles use double-machine wefts and a single cutting direction for the hair, which keeps strands aligned and reduces split ends and loose hair. This construction delivers better elasticity at the seam and a smoother lay when installed.

• Double machine weft for secure stitching and reduced shedding.
• Clean, tight weft edges for easier sewing and gluing.
• Minimal chemical processing retains natural texture and resilience.
• No animal hair or contaminants mixed in — pure human hair source.

How should I care for and maintain these straight bundles?

Routine care—gentle shampoo, conditioning, and occasional deep conditioning—keeps the bundles soft and manageable. Use low-to-medium heat and protective products to extend the hair’s lifespan.

• Wash with sulfate-free shampoo and a moisturizing conditioner.
• Detangle from ends upward using a wide-tooth comb.
• Limit high-heat styling and use a heat protectant spray.
• Store on a mannequin head or silk bag to preserve cuticle alignment.

Who is this for: These Ysivonu 12A straight human hair bundles are ideal for anyone seeking natural-looking, reusable extensions with a glossy straight finish—suitable for stylists building sew-ins or clients who want salon-grade Brazilian virgin hair that can be colored and styled. They work well for everyday wear, special occasions like weddings or graduations, and for users who prefer minimally processed hair with reliable weft construction.