Stuffing a water bottle inside a Crinkit is a tight squeeze, but it's to make it difficult for your dog to get the bottle out. Please read the instruction included on the toy or on Zigoo's website. Contact Zigoo directly with any questions.
For Longer Crinking, stuff an old cut up tee shirt inside your Crinkit before securing the cap and stuffing the water bottle inside.
Crinkits are durable, but they are not indestructible. It's important to know your dogs play. If you have any questions please contact Zigoo."