Dover, Delaware – September 02, 2026 – PRESSADVANTAGE –
August has emerged as the peak month for reported bicycle theft, and independently published data from Bike Index indicates that a significant share of stolen bicycles were locked at the time they were taken. Seatylock, a design-led mobility security brand, is using the seasonal spike to clarify a widely misunderstood point: a locked bicycle is not automatically a securely locked bicycle.
The distinction matters because riders often assume that owning or applying any lock provides adequate protection. According to Seatylock, effective protection depends on three factors that extend well beyond the act of locking itself: independently verified security certification, correct lock size and fit, and correct locking technique.
The first factor concerns certification. Rather than relying on manufacturer-created rating scales, which cannot be compared across brands, Seatylock advises cyclists to prioritize recognized independent testing such as Sold Secure. The company points to its own Mason U-lock series as a real-world illustration of what independently certified protection looks like. The Mason 140, 180, 220 and 300 each carry Sold Secure Diamond certification, the highest bicycle-lock tier within that system, and the Mason 140 and 180 additionally hold ART 3 Star certification. Riders seeking a structured overview can consult the Seatylock Bike U-Lock Guide, which explains how independent institutes benchmark theft resistance.
The second factor addresses sizing. A larger lock is not inherently safer. Excess empty space inside the shackle can create room for leverage attacks, while a lock that is too small may fail to capture the frame, wheel and anchor together. The Mason range is produced in four sizes for this reason, with the 140 and 180 suited to more compact locking areas and the 220 and 300 offering greater reach for larger frames, fixed anchors and e-bikes. Guidance on matching a lock to a higher-value bicycle is detailed in the Seatylock E-Bike U-Lock Guide.
The third factor is technique. Security depends on what the lock actually captures. Seatylock recommends securing the frame and rear wheel to a fixed, immovable object, minimizing unused space inside the shackle, and positioning the lock away from the ground where possible. These practices are outlined in the Seatylock U-Lock Technique Guide.
“The data tells a difficult story: many riders do everything they think they should, and still lose their bikes,” said Michael Shenkerman, Head of Product Education at Seatylock. “The lock is only one part of the equation. Independent certification, correct sizing and proper technique are what turn a locked bike into a secured bike.”
Shenkerman added that seasonal awareness can change outcomes. “August theft figures are a reminder that protection is a system, not a single purchase. When a rider understands why third-party certification exists and how to route a shackle correctly, the risk profile changes considerably.”
Founded in 2008, Seatylock designs, produces and assembles mobility security products in-house, including folding locks, U-locks, chain locks, seat-lock hybrids and detachable seats. The brand holds independent certifications from bodies including Sold Secure and ART, along with IF Design, Red Dot and European Product Design Award recognition, reflecting its position that certified strength and everyday usability belong together under the tagline “Protection Perfected by Design.”
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For more information about Seatylock, contact the company here:
Seatylock
Michael Shenkerman
info@seatylock.com
3500 S Dupont HWY
Dover 19901-6041
Delaware
USA
