The natural cork and silicone stopper is held securely in place by the reassuring stainless steel ring, so there is no danger of the bottle leaking in your bag. Also, the fabric loop makes it easy to carry your bottle while on the go and it also helps you pull the stainless steel ring to secure the stopper.
The bottle is specially designed to hold the Binchotan charcoal securely in place. Simply drop, squeeze, tilt and lock, to prevent it moving inside the bottle. The charcoal is an organic product, so the thickness can vary. PLEASE NOTE: The important thing is that the charcoal locks in place, even if it appears to be only barely inside the groove. If you force the charcoal into the space, you can cause the bottle to crack.
The curvaceous shape of the bottle, gives a natural position for your hand and makes it comfortable and reassuring to hold.
The bottle is made from Tritan™, produced by the American company Eastman. Tritan™ is absolutely BPA free and of the very highest standards, passing the strictest regulations. Having a recycling number does not determine what the material is made from - it is only there to instruct the user how to recycle the material.