Seigaiha Wave Knit Cardigan — Japandi Coastal Unisex Sweater in Steel Tide

Wrap yourself in the ancient beauty of the sea. This unisex knit cardigan brings one of Japan’s most beloved wave motifs to life in a soft, wearable textile — a rolling ocean of scalloped waves in dusty steel blue and warm cream, finished with a V-neck silhouette and a relaxed, layerable fit.

Seigaiha (青海波) — meaning “blue ocean wave” — is a centuries-old Japanese pattern symbolizing good fortune, resilience, and the endless rhythm of the sea. Wearing it isn’t just a style choice; it’s carrying a piece of that tradition with you.

Fabric & Construction

• 55% cotton, 45% polyester
• Fabric weight: 13.27 oz./yd.² (450 g/m²) — substantial warmth without bulk
• Jacquard knit construction — the wave pattern is woven directly into the fabric, not printed
• V-neck silhouette with dark button closure
• Ribbed cuffs, collar, and hem for a polished, structured finish
• Relaxed, unisex fit — ideal for layering

Design Details

• Style: Japandi + Japanese traditional + coastal aesthetic
• Pattern: Seigaiha — scalloped ocean wave motif
• Colorway: Steel Tide — dusty steel blue waves on a warm cream ground
• Pairs beautifully with neutrals and earth tones

Sizing

Unisex sizing available in 2XS – 3XL. Select your size from the dropdown. See the size guide below for measurements.

Care Instructions

• Machine wash at 30–40°C (86–104°F), gentle cycle
• Lay flat to dry
• A slight reduction in size after the first wash is normal — size up if between sizes or prefer a roomier fit
• Due to the layered color combinations in this design, individual tones may appear slightly different in person compared to screen — a natural quality of complex knit patterns

Please Note

This product features an AI-generated design. The vision, curation, and care behind every listing is entirely my own.

Compliance & Safety

Age restrictions: For adults
EU Warranty: 2 years

In compliance with the General Product Safety Regulation (GPSR), AiMEiRi and SINDEN VENTURES LIMITED ensure that all consumer products offered are safe and meet EU standards. For any product safety related inquiries or concerns, please contact our EU representative at gpsr@sindenventures.com. You can also write to us at 76C White Street, Eatontown, NJ 07724, United States or Markou Evgenikou 11, Mesa Geitonia, 4002, Limassol, Cyprus.

Size Guide