Review on Sofie's Cottage Silicone Wine Stopper Pourer Set - 3-Pack with Stainless Steel Accent - Versatile Stopper Pourer for Glass Wine, Cooking Oil, Liqueur, or Flavoring Bottles - White/Pink/Purple/Green Options by Ben Liu

I really like this product. I put this in my oil and vinegar bottles. My only complaint is that the cork goes tighter than the spout part. Everything seals well; there are no leaks. However, if I hold the bottle with one hand and pull out the cork with the other, I'll eventually pull out the entire spout. So I learned not to hold the bottle but the base of the spout. Insufficient friction between bottle cap and glass bottle. I would still buy this product again but I think there is room for improvement in the product design.