ENVE X Selle Italia SLR Boost 3D Carbonio Superflow

ENVE X Selle Italia SLR Boost 3D Carbonio Superflow front

ENVE X Selle Italia SLR Boost 3D Carbonio Superflow top

ENVE X Selle Italia SLR Boost 3D Carbonio Superflow rear

ENVE X Selle Italia SLR Boost 3D Superflow

Q: What are the dimensions and weights?

S3 is 130 × 248 mm at 166 g (±8%). L3 is 145 × 248 mm at 171 g (±8%).

Q: What rail standard does it use?

Carbon 7×9 mm oval rails. Selle Italia notes the rails are +10 mm longer for a wider adjustment range.

Q: What does the 3D printed cover do?

It uses a proprietary 3D-printed pattern with differentiated cushioning zones that provide progressive absorption and support.

Q: Is the shape flat or curved?

It is classified as Neutral (anatomical), designed to support both dynamic and static riders.

$649.99

Size: No selection

Clear

Product Highlights

ENVE × Selle Italia SLR Boost 3D Kit Carbonio Superflow is a road saddle with a 3D-printed cover (Carbon DLS™), Hi-Tech carbon rails (7×9), and a large Superflow cut-out for pressure relief.

Sizes: 130 × 248 mm (S3) • 145 × 248 mm (L3)
Weight: 166 g (S3) • 171 g (L3) (±8%)
Rails: Carbon Ø7×9 mm, +10 mm longer rails for more adjustment
Shape: Neutral (anatomical)
Use: Road/Gravel

Frequently Asked Questions

What are the dimensions and weights?

S3 is 130 × 248 mm at 166 g (±8%). L3 is 145 × 248 mm at 171 g (±8%).

What rail standard does it use?

Carbon Ø7×9 mm oval rails. Selle Italia notes the rails are +10 mm longer for more adjustment range.

What is “Superflow”?

Superflow is Selle Italia’s larger central cut-out, intended to reduce pressure in the perineal area during prolonged riding.

What does the 3D printed cover do?

The cover uses a proprietary 3D-printed pattern with differentiated cushioning zones for progressive absorption and support.

Is the shape flat or curved?

It’s classified as Neutral (anatomical), designed to support both dynamic (anterior pelvic rotation) and static (posterior pelvic rotation) riders.

Free Shipping $100+

Free shipping on all orders over $100 (before tax)
All orders are processed within 1 business day
Orders ship from our warehouse in Guelph, ON
Free shipping ranges from 2-6 business days depending on location within Canada
Expedited shipping options (which ranges from 1-3 business days) are available at checkout upon entering your shipping address
We ship with most major couriers, including Canada Post, UPS, Fedex, Purolator, Canpar, and ICS
Full shipping details can be found in our shipping policy

Returns & Exchanges

If your NOMAD purchase isn't quite right for you, you may return it for a refund within 30 days from delivery
Return items must be unused and accompanied by all original packaging, with both product and packaging in an undamaged state and all product tags intact
Refunds will be issued to your original form of payment within 2-5 business days of receipt of items at our distribution centre
We cannot accept returns or exchanges of the following items:
- Nutrition products
- Gift cards
- Water bottles
- Personal care items, such as body creams and lotions
- Items marked as clearance or final sale
Return shipping fees are the responsibility of the customer
Full return details can be found in our return policy

Overview

The ENVE X Selle Italia SLR Boost 3D Kit Carbonio Superflow pairs Selle Italia’s flagship SLR Boost platform with a 3D-printed cover and carbon rails for a high-performance road setup that prioritizes support, pressure relief, and low weight. The short “Boost” length keeps the saddle compact for modern riding positions, while the Superflow cut-out is designed to reduce prolonged pressure in the perineal area.

3D printed cover and zonal support

Selle Italia uses a proprietary 3D-printed pattern created with Carbon DLS™ technology. The structure is built with differentiated cushioning zones that provide progressive absorption across the surface—aimed at maintaining support where you need it while improving comfort on long road rides.

Superflow cut-out and Neutral shape

The Superflow opening is the larger Selle Italia cut-out format, intended to reduce physical limitations caused by pressure during extended time in the saddle. The saddle is also classified as Neutral (anatomical), described by Selle Italia as a shape that supports both anterior pelvic rotation (dynamic riders) and posterior pelvic rotation (static riders).

Rails, fit and sizing

The saddle uses Hi-Tech Carbon rails in the 7×9 mm oval standard. Selle Italia specifies the carbon rails are +10 mm longer to provide a wider adjustment range. Two sizes are offered: S3 (130 × 248 mm) and L3 (145 × 248 mm). Claimed weights are 166 g and 171 g respectively (±8%).