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On each product page, we provide the model's measurements and what size she is wearing to help guide you.
You can refer to the charts when selecting sizes but please note that sizes cannot be guaranteed and might vary slightly between brands.
If you need any advice about sizing, please feel free to drop us a line at: service@sunnoss.com
The measurements in the description of individual products are taken only across the front side of the garment, not around the circumference (e.g. chest and waist).
If you can't find a completely satisfactory size in our size chart, don't worry! Feel free to contact us anytime at service@irispetal.com or through our online customer service. Our team is more than happy to provide personalized advice, recommend alternative styles, or assist with customization needs. Your comfort is our top priority!
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We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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The Topo Athletic ST-6 is a lightweight, minimalist training shoe designed for athletes who split their time between the gym, cross-training, and light running. Built on a zero-drop platform with a 14 mm stack height, the ST-6 promotes natural movement, balance, and stability—especially under load—making it an ideal choice for strength training and functional workouts.
Weighing just 6.6 oz (187 g), the ST-6 feels almost invisible on foot. A ZipFoam™ midsole provides subtle responsiveness without compromising ground feel, while the Ortholite® footbed adds step-in comfort for long gym sessions or all-day wear. The shoe’s foot-shaped, wide toe box allows for natural toe splay, improving stability during lifts, plyometrics, and single-leg exercises.
The updated upper fits like a sock—secure, breathable, and exceptionally comfortable—while maintaining a clean, understated aesthetic that transitions easily from workouts to casual wear. The low-profile, rock-solid platform excels on the gym floor, treadmill, stair climber, and indoor track, though it is best suited for shorter or controlled runs rather than high-mileage road training.
Best for: Gym training, lifting, cross-training, treadmill runs, and minimalist lifestyle wear
Not ideal for: Long outdoor runs or runners seeking high stack height and cushioning
Key Specs
Price & Availability: $115, available Spring 2026
The Topo Athletic ST-6 is a versatile, low-profile trainer for athletes who value natural movement, stability, and simplicity—perfect for those who want one shoe that thrives in the gym and fits seamlessly into everyday life.
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