SQlab 621 M-D Active 2.1 saddle 2025

M-D stands for maximum relief

The 621 M-D active 2.1 is for city bikes with a slightly forward bent to very upright sitting position. The details of the saddle offer maximum relief of sensitive areas. The M-D Line was developed for maximum relief of sensitive areas. A pressure distribution according to medical aspects. M-D Line stands for maximized dip. In combination with the high classic step shape, distributes the body weight to the sit bones. The 621 M-D active 2.1 has a relief of 85%. The 621 M-D active 2.1 is designed for comfort-focused riders who appreciate pressure relief and support on upright city bikes. The „M-D“ shape (Maximized Dip) maximizes pressure relief in the perineal area and is excellent for prostate patients and riders who struggle with the ERGOLUX relief. Meanwhile, the movement of the active system can relieve the lower back. With more padding and a wide contact area, it is the ultimate saddle for relaxed daily commutes and city rides.

Perfect fit
Comfort begins with the right size. The 621 ERGOLUX® active 2.1 comes in multiple widths, ensuring that the sit bones are fully supported. Only then can pressure be effectively relieved from the sensitive perineal area in men and the often lower pubic arch in women.

M-D Line: pressure relief
The high classic step shape, combined with the maximized dip, distributes body weight to the sit bones. This model offers with 85% the highest relief for perineal area and prostate from the entire SQlab product range. The M-D Line is also suitable for heavier riders due to the active system and the stable CrMo rails. In particular, the width of 24 cm provides a very large bearing surface to absorb even high body weight well.

Active-Technology: Back-friendly support
The SQlab active saddle technology allows the saddle to follow the natural pedaling motion through lateral flex. This can help to reduce strain on the spinal discs and promote mobility. The updated active 2.1 version now features a practical switch function – letting you choose between two levels of movement, easily adjustable in seconds.

ERGOLUX® means comfort
The two-stage ERGOLUX® shape supports balanced pressure distribution between the sit bones and the perineal area – ideal for a more upright riding position. Thanks to the wave-shaped contour, pressure is spread over a wide area of the sit bones. Compared to the M-D Line, the difference in height between the seating surface and the relief zone is more moderate – for noticeable comfort on everyday city rides or leisurely tours. The 621 ERGOLUX® active 2.1 provides up to 70% relief in the perineal region.

Features

• M-D Shape – Maximized dip for maximum relief in the perineal and pubic bone area
• Active System 2.1 – Promotes natural pelvic movement
• Wide contact area – Designed for upright seating positions
• Ready for the city – Ergonomic comfort, every day

Tech Specs

• Area of use: City
• Producer's weight: 640 g (18 mm) / 650 g (21 mm) / 660 g (24 mm)
• Length: 277 mm
• Height: 88 mm
• Active technology: Yes - Comfort
• Material rails: CrMo (solid)
• Material base: Polypropylene Compound (PP)
• Material padding: Comfort Foam
• Material cover: Durable Microfibre
• Hardness in sq-shore: 40
• Relief of perineal area in %: 85
• Maximum load: 150 Kg
• Maximum torque in nm: 18

Colour Black / Measure 18 cm

Colour Black / Measure 24 cm

Measure 21 cm / Colour Black