There are several typologies of drainage geocomposites available in the market which can be classified according to their core structure as: dimpled, monofilaments and geonets. Each one of them has its own range of compressive resistances as well as specific applications where some of them perform better than the others. Geonets have been typically considered as the best option to provide adequate flow capacity when the load to withstand is medium, high or very high. But for low pressure applications, such as landfill cappings, traditional geonets were not able to give an adequate and cost-effective solution, where many times monofilament-based composites where chosen instead. While thinner and lighter bi-planar geonets were not capable of giving a high flow rate when needed, the heavy tri-planar geonets ap-peared as very expensive solutions. For those areas where intense episodes of rainfall are expected, or in landfills with high extension and long slopes, a high flow capacity geonet was needed. Trying to join the benefits of the tri-planar structure with a light product, a new cutting edge lightweight tri-planar geonet has been designed and developed to give response to the projects where cost-effectiveness and high per-formance are a
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