Performance Clothing, Kid-Sized
Dillos Sun Onesies are the first UPF 50, lightweight, breathable, full-coverage onesies purpose-built for your baby or toddler’s outdoor adventures.
Designed for comfort
and protection
UPF 50+
Fabric blocks UV and won't wash out
Breathable Fabric
Keeps your little one cool as a cucumber
Full Coverage
Built in visor, hood, footies, and handsies
The Sun Can Be Harsh
~80%
of UV rays pass through plain white cotton shirts
15
minutes can be all it takes to burn exposed skin
What makes Dillos different?
We use high-performance fabrics — the same breathable, lightweight, quick-drying materials you’d expect in your own outdoor gear — but tailored for babies and kids.
The result: clothing that keeps little ones cool, comfortable, and fully sun-protected. Unlike most UPF brands, our UV protection comes from the fabric itself, not chemical sprays.
What size should I order?
Check out our size guide. If you're between sizes, we recommend sizing up — babies grow fast! If you're still unsure, feel free to drop us a line at info@dillosclothing.com!
Do your clothes have sun protection?
Dillos clothes are 50+ UPF*, blocking over 97% of UVA and UVB rays. Our high performance fabrics block UV rays without relying on chemical treatments like other brands. That means the UPF won't wash out.
*In garments with mesh vents the mesh is typically not UPF rated.
What is the return policy?
We hope you and your little one love your order — but if something’s not quite right, we’ll make it right.
Returns
- You can return items within 30 days of delivery.
- Returned items must be clean, unwashed, and in resellable condition (tags attached).
- Return shipping is paid by the customer.
Exchanges
- Need a different size or color? We’ve got you!
- Once we receive your return, we’ll ship out the new item with free exchange shipping on your first exchange per order.
Damaged or Defective Items
- If something arrives damaged, defective, or not what you ordered, email us at info@dillosclothing.com within 7 days of receiving it.
How to Start a Return or Exchange
- Email info@dillosclothing.com with your order number and what you’d like to return or exchange.
- We’ll get back to you within 1 business day with next steps.
- You’ll receive a return address and shipping instructions.
A Few Notes
- We recommend using a trackable shipping method for returns — we can't help with lost packages.