SIROKO BX UMBRAIL ROAD CYCLING BIBSHORTS
BX Umbrail bib shorts are exclusively designed to optimise cyclist performance on high-level routes.
The Siroko Strato+ pad, made from Belgian Recticel, features multiple foam densities to deliver maximum comfort. Ideal for long rides and competitions lasting between eight and ten hours.
Specifically engineered to minimise friction, these bib shorts feature a multi-panel construction combined with high-compression materials, as well as next-generation bib straps that achieve a perfect fit with reduced weight. The Powerlength elastic leg bands keep the shorts securely in place even under maximum effort, ensuring the best possible experience for cyclists performing at the highest level.
The quick-drying polyester and elastane fabric includes UPF 50 for complete protection against ultraviolet radiation. A Snackback pocket positioned at the lower rear of the bib straps and highly reflective details (330 CD/LUX) enhance safety on the road.
Do not fear perfection.
Details
- Ultralight bib straps
- Multi-panel cut for maximum fit (Ultrafit)
- Lumbar support panels
- High-compression fabric
- Quick-drying materials (Superdry fabrics)
- Strato+ chamois made with Belgian Recticel
- Internal Xtra-Gripper system
- Elastic Powerlength band
- Extra-bright reflective detail (330 CD/LUX)
- UPF 50 sun protection
Composition
Bib:
- 70% Polyester / 30% Elastane
Shorts:
- 82% Nylon / 18% Elastane
- 85% Polyester / 15% Elastane
- 44% Polyester / 56% Elastane
Weight
• < 200 g / 7.05 oz
Improve Your Performance
Siroko BX Series bib shorts are designed to deliver the perfect balance between comfort and efficiency, not only for amateur cyclists but also for high-performance riders. After months of development, Siroko created a versatile and lightweight product that guarantees excellent adaptability during the most demanding efforts. A well-engineered product that offers an outstanding balance between quality and performance.
Perfect for demanding rides lasting between eight and ten hours, the Siroko Strato+ pad provides exceptional comfort and versatility. Its structure promotes an optimal anatomical fit.
The dual-density foam protects the body by absorbing small vibrations and preventing unwanted friction. The Microsense fabric, made from high-quality Belgian Recticel, delivers excellent breathability and performance, providing the finishing touch to this premium line of cycling bib shorts.
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Find Your Perfect Size
To choose the correct size for your bibshorts, measure your hips and inseam in cm or inches, as shown in the chart.
- Hips (C): Measure around the fullest part of your hips, keeping the tape horizontal and comfortably snug.
- Inseam (D): Measure from the crotch down to the ankle, following the inside of the leg.
- Compare your measurements with the size chart (XS–3XL). If you’re between sizes, choose the larger size for comfort, or the smaller for a closer/race fit.
- Tip: Measure over a thin base layer similar to what you’ll wear while riding.
Size Chart
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About Us
Cyclist’s Closet is a virtual cycling store based in Lisbon, Portugal. We provide high-quality cycling gear at competitive prices, helping riders achieve the best performance on every ride.
FROM CYCLISTS TO CYCLISTS — COMMITTED TO QUALITY AND PERFORMANCE
We are an authorized reseller of leading cycling brands such as Sidi, Castelli, Selle Italia, Prologo, Fizik, MET, and many more. All our products are sourced directly from official distributors in Europe, ensuring authenticity, competitive pricing, and trusted service.
Shipping & Handling
🚚 Free Shipping available on most shoes and helmets. For clothing, free shipping applies when purchasing two or more items.
Delivery time depends on the destination country and carrier.
Customs Duties: Depending on your country, your order may be subject to import duties or taxes. These charges are the buyer’s responsibility.
Returns
If you are not satisfied with your purchase, you can return the item within 30 days. Returned items must be:
- In the same condition as received
- With original tags attached
- In the original box/packaging
- Without signs of use or damage (including mishandling during return shipping)
Buyer is responsible for return shipping costs, unless the item is faulty or incorrect.
Contact
If you have any questions, please do not hesitate to contact us. We are available 7 days a week to assist you.