




Our models typically wear US Size 2-4 or Australian Size 6-8, X-Small, Small, or One-Size garments.
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!
Free Shipping on Orders Over $50 !
Fast, free shipping—style delivered with ease !
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.
Enjoy an extremely long return period during the event !
Our 24/7 customer care team is here to deliver thoughtful support !

On Cloud X 4: The Ultimate Cross-Training Shoe for Runners & Athletes
Designed for runners who cross-train, the On Cloud X 4 delivers the perfect balance of cushioning and ground feel, making it ideal for everything from runs to HIIT workouts. Built with Helion™ foam cushioning, it provides soft landings while the X-shaped Speedboard® enhances propulsion and flexibility for seamless multi-directional movement.
The outsole features strategically placed rubber pads for grip and durability while keeping weight to a minimum. Topped with a breathable, eco-friendly upper made from 100% recycled polyester, this shoe excels in the gym, on the road, or during high-intensity sessions. Whether you’re running, jumping, or lifting, the Cloud X 4 is your go-to for all-day performance.
UPPER
MIDSOLE
OUTSOLE
| Weight | 8.1 oz (Women's Size 8) |
| Heel Stack | 32 mm |
| Forefoot Stack | 25 mm |
| Heel-Toe Offset: | 7 mm |
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