⚠️ Please Note

This swimsuit is made from woven fabric and is designed for a very tight, compressive fit. Please select your size carefully using the fit guide below — choosing a size smaller than recommended may cause bonded seams to peel or tear.

Some portions of the construction use stitching in addition to ultrasonic bonding.

Size charts list body measurements as a guide only; some sizes shown may not be available for sale.

Mizuno GX Sonic Royal SF Half Spats Racing Swimsuit

✨ Overview

The Mizuno GX Sonic Royal SF is a top-tier competitive racing swimsuit developed for elite swimmers seeking maximum speed. Featuring the Soft Fit (SF) model construction, it delivers a gentle, comfortable feel alongside a secure, body-hugging fit — and carries official WORLD AQUATICS approval for sanctioned competition use.

⭐ Key Features

🏅 WORLD AQUATICS Approved — eligible for use in official sanctioned competitions

🌊 Flat Swim Technology — fabric and structure work together to support a flat body position, reducing drag and improving propulsion efficiency

💧 Sonic Light Ribtex-UW0 — slit-nylon structure high-water-repellent fabric delivers lightweight performance in the water

🔗 Ultrasonic Bonding + Sonic Line Design — minimizes seam bulk for a smooth, flat surface against the water

🤸 Soft Fit (SF) Model — soft, comfortable feel with a secure, body-conforming fit

🎨 Stargazer Concept Design — inspired by the idea that life's most memorable moments come from the unexpected; every swimmer is a challenger of an uncertain future, guided by their own lucky star

🧵 Multi-fabric construction — combines Sonic Light Ribtex-UW0 high-repellent fabric with panels of varying hold levels for targeted support

📋 Specifications

📌 Model: GX Sonic Royal SF Half Spats

🏷️ Season: Spring/Summer 2026

🎨 Color: Estate Navy × Lightning Yellow (Color Code: 84)

📐 Available Sizes: 2XS, XS, S, M, L, XL

🧶 Outer Body Material: Nylon 65%, Polyurethane 35%

🧶 Front Thigh Material: Nylon 68%, Polyurethane 32%

🧶 Lining Material: Nylon 65%, Polyurethane 35%

📏 Inseam Length (above seam): 2XS 21.7 cm (8.5 in) / XS 22.8 cm (9.0 in) / S 23.9 cm (9.4 in)

📏 Inseam Length (above seam): M 25.0 cm (9.8 in) / L 26.1 cm (10.3 in) / XL 27.2 cm (10.7 in)

📊 Waist Fit Range: 2XS 63–69 cm (24.8–27.2 in) / XS 67–73 cm (26.4–28.7 in) / S 71–77 cm (28.0–30.3 in)

📊 Waist Fit Range: M 75–81 cm (29.5–31.9 in) / L 79–85 cm (31.1–33.5 in) / XL 83–89 cm (32.7–35.0 in)

📊 Hip Fit Range: 2XS 81.5–87.5 cm (32.1–34.4 in) / XS 81.5–90.5 cm (32.1–35.6 in) / S 84.5–93.5 cm (33.3–36.8 in)

📊 Hip Fit Range: M 87.5–97.5 cm (34.4–38.4 in) / L 90.5–100.5 cm (35.6–39.6 in) / XL 93.5–103 cm (36.8–40.6 in)

📊 Hip Bone Circumference: 2XS 67–71 cm (26.4–28.0 in) / XS 67–75 cm (26.4–29.5 in) / S 70–79.5 cm (27.6–31.3 in)

📊 Hip Bone Circumference: M 74.5–83.5 cm (29.3–32.9 in) / L 78.5–87.5 cm (30.9–34.4 in) / XL 82.5–91.5 cm (32.5–36.0 in)