Unleash the Adventure The Polygon Siskiu D24 is the perfect full-suspension mountain bike for young riders ready to conquer the trails. Upgraded for 2024 with hydraulic disc brakes, this bike also boasts a lightweight frame, adjustable air suspension, and reliable components - it's built for fun and progression. BEST 1ST FULL SUSPENSION KID-FRIENDLY - PROGRESSION The perfect upgrade for adventurous kids (ages 7-11) ready