Polyfit Adjustable Kettlebell — 13.6 kg Black | 5-Position Selector, Cast-Iron Core

The Polyfit Adjustable Kettlebell is a single compact kettlebell that switches between five calibrated weight settings, replacing multiple kettlebells for efficient home strength and conditioning.

Designed for athletes and home exercisers who need variety without clutter, the Polyfit Adjustable Kettlebell combines a cast-iron core with a matte non-slip finish and a quick-change mechanism. Available in three model ranges (30, 40, 50 lb maximum), each unit lets you step up weight in small increments so you can progress workouts, save space, and switch exercises in seconds.

How do I change weights quickly between exercises?

Polyfit’s selector system is engineered for tool-free, one-handed adjustments so you can move from swings to presses with minimal downtime. The mechanism locks solidly into place to feel like a single-piece kettlebell at each setting.

• 5 calibrated weight positions across each model for incremental load increases.
• Tool-free selector dial that clicks into place for secure use.
• Fast transitions: change weight in seconds to maintain workout flow.
• Clear weight markings on the selector for accurate selection.

What safety and grip features protect my hands during intense sets?

The handle is finished with a matte, non-slip coating that minimizes slippage from sweat and provides a comfortable grip for dynamic movements. The handle diameter and smoothness are balanced to reduce friction while maintaining control.

• Matte non-slip coating that wicks moisture and improves hold.
• Smooth but textured handle profile for consistent hand placement.
• Secure locking mechanism so the weight does not shift mid-rep.
• Durable coating resists chipping and reduces noise on contact.

How durable is the Polyfit Adjustable Kettlebell for long-term use?

Under its matte finish sits a cast-iron construction known for longevity and resistance to wear. The design balances protective coating with a solid internal structure so the unit withstands repeated drops and high-frequency home use.

• Cast-iron core for structural integrity and long service life.
• Protective matte coating to prevent surface damage and rust.
• Robust selector components built to handle frequent adjustments.
• Compact footprint reduces the chance of damage from storage or transport.

Which model should I choose for my strength level and goals?

Select the model based on the heaviest load you need: 30 lb max for beginners and light conditioning, 40 lb for intermediate strength work, and 50 lb for advanced lifts and heavier conditioning. Each model still offers the same five-step adjustability for progressive training.

• 30 lb model: 10–30 lb range for newcomers and rehab-focused routines.
• 40 lb model: 10–40 lb range for steady strength progression.
• 50 lb model: 10–50 lb range for advanced kettlebell exercises.
• All models: space-saving single unit replacing multiple fixed kettlebells.

Who is this for: The Polyfit Adjustable Kettlebell is built for home gym owners, personal trainers, and active exercisers who want a compact, flexible tool to cover a wide spectrum of strength, conditioning, and circuit-style workouts. It suits users who need quick weight changes, limited storage space, and a durable kettlebell that scales with their progress.