Raku-raku Eco Pack Refill for refilling high viscosity liquids, such as shampoo and conditioner. The refill packaging cap fits neatly inside the mouth of the regular bottle upside down, without leakage. Because film is about 18% thinner and softer than existing products, this makes it easier to refill quickly without wasting or spilling. Considering an aging society and environmental friendliness, this new refill pouch has been developed for steady and easy refilling by adding top and bottom gussets and a spout in a center of the top face. The considered design for eco-friendly package enables one hand gripping and dramatically easier refilling. This new pouch improves on all aspects of the refilling process with a better-fitting, easy-to-open closure and a more stable shape.