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Choose your sets →Nail size guide - Long Coffin
Every SIYOU set comes in Small, Medium and Large. Measure the widest part of each nail in millimetres, then choose the size that fits most of your nails using the chart below.
Between sizes? Size up for a comfier fit — especially if you have flatter nail beds. Wrong size anyway? We exchange it free within 14 days of delivery.
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Crystal Coffin French — Long coffin nails in a sheer beige-nude with clean white French tips. Accent nails add rectangular crystal gems, small pearl clusters, and scattered silver foil flakes near the cuticle.
The French is the structure and the crystals are the event: most of the set stays plain, with the hardware concentrated on a couple of nails per hand. Long coffin gives the rectangular stones a flat surface to sit on, which is why they read as set jewelry rather than as an applied sticker.
Features & Specs
- Wear Time: 7–10 days with the included adhesive tabs; up to two weeks or longer with the included nail glue and proper care.
- Length & Shape: Long Coffin.
- Finish: Glossy finish in Beige and White.
- Durability: No dry time; designed to resist chips and smudges during normal wear.
- Ethics: Vegan & Cruelty-free and reusable.
[ INCLUDED + APPLICATION ]
THE KIT + THE METHOD
See exactly what arrives with your set, then follow the detailed adhesive-tab method for a clean, secure application.
FIG. 04 Gentle removal — take your time
- Soak your nails in warm water and mild soap for 10–15 minutes to loosen the adhesive.
- Starting at one side, gently lift with the included cuticle pusher — never force or pry a nail free.
- If a nail resists, dab a little cuticle oil at the edge and let it sit for a minute before trying again.
- Once every nail is off, buff away any leftover adhesive and finish with cuticle oil or hand cream to hydrate your natural nails.