Our premium tees come in packs of 50 & 100, measure at 85mm. We use bamboo for a number of reasons; Bamboo is a fast growing and a naturally renewable tree-like grass. It requires little maintenance to farm as it doesn't need any pesticides or herbicides and very little water to grow. One of the biggest environmental benefits of bamboo is its ability to absorb carbon dioxide and produce oxygen. Bamboo also self-regenerates using its own roots to replenish the grass after harvest. Bamboo is clocked as the fastest growing plant on earth. Some species have been measured to grow over 4 feet in 24 hours. A pole of bamboo can regenerate to its full mass in just six months. It can be continuously re-harvested every 3 years without causing damage to the plant system and surrounding environment. During the time it takes to regenerate, the bamboo plants root system states intact. Continuous harvesting of this woody grass every 2-7 years actually improves the overall health of the plant.