This Sia Women  Base Layer uses quick-dry diamond fleece, combining lightweight warmth and windproof insulation, ideal for 6°C to 16°C. The fabric offers excellent moisture-wicking and anti-pilling level 4 for long-lasting neatness. Its high-stretch fit ensures comfort, while refined craftsmanship and prints add style. Perfect for road and mountain cycling.       

● This Vest is "Pro Fit"
● The technology fabric using quick-drying diamond fleece has the function of rapid moisture absorption and perspiration
● The fleece lining can keep you dry in cold and wet conditions.
● Suitable for a temperature range of 6-16℃, ensuring warmth and comfort in cold weather.
● Seamless folding technology improves wearing comfort.

●90% polyester 10% cyanoacrylate

Note:

Black Friday clearance products are non-refundable and may only be returned for store credit.

Shipping & Delivery

We ship and deliver worldwide. Below are our shipping options and estimated delivery timelines.

Free & Standard Shipping

• Free standard shipping on orders over $110.
• Orders processed and shipped within 1–2 business days (Monday–Friday, excluding public holidays).
• Delivered via international courier to countries such as the United States, Canada, and Australia.

Estimated timing

• Arrive at local customs: 1–3 business days
  
• Local carrier delivery: 3–4 business days
  
• 
  Total estimated delivery time: 5–9 business days
  

For more details, see our shipping policy:
Shipping Policy.

Express Shipping

• Orders processed and shipped within 1–2 business days (Monday–Friday, excluding public holidays).
• Handled by international express couriers to destinations such as the United States, Canada, and Australia.

Estimated timing

• Arrive at local customs: 1–2 business days
  
• Local delivery: 1–2 business days
  
• 
  Total estimated delivery time: 4–5 business days
  

For more details, see our shipping policy:
Shipping Policy.

Returns

We accept returns on products within 40 days of receipt. If you're not 100% satisfied, please review our refund policy for full details.

View our refund policy:
Refund Policy.