How it works
The path of your Kornwerkshop equipment, from order placement to arrival, involves four transparent stages.
Choose
The documentation for each device details its material specifications and recommended method of use. Review the spec sheets, check verified feedback, and add it to your cart.
Order
Pay the courier in cash upon delivery or submit a bank transfer to our account. A confirmation email with your order reference will be sent immediately.
Dispatch
Orders received before the cutoff time ship on the same business day, properly packed and entrusted to an insured courier with tracking.
Use and return
Apply the technique described in the instructions. If you decide not to keep the equipment, you have 30 days to return it under our returns process.
Technical standards
Medical silicone and surgical resins
The mouthpieces and resistance membranes use neutral, high-density compounds that do not impart flavors or degrade under constant moisture.
Mechanical resistance calibration
The airflow selector dispenses with fragile electronic systems, offering stable restriction levels that remain constant during your run.
Individual workshop inspection
Each breathing trainer is inspected at our facilities before final packaging to rule out play or seal imperfections.
Shipped in a rigid cardboard box
Your order travels protected in recyclable packaging, factory-sealed to maintain the hygienic condition of the contents.
Common questions
how to choose the resistance level for runningIt is best to start practicing with the valve in its most open position to let the intercostal muscles adapt without altering your stride. The Kornwerkshop mechanical regulator allows you to increase the effort progressively as your running cadence stabilizes.
what materials the breathing trainers are made ofThe central frame is made of neutral ABS thermoplastic, while the mouth contact piece is molded from translucent food-grade silicone. None of our products contain bisphenol A or synthetic additives that release odor or taste.
how to clean and disinfect the device after exerciseSimply separate the silicone mouthpiece and the regulator chamber and submerge them in warm water with mild household soap. After rinsing, air-dry the parts on a clean surface before storing them in their packaging.