Thermoplastic Polyurethane (TPU) filament is a versatile material renowned for its flexibility and durability in 3D printing. With excellent shock-absorbing properties and high resistance to abrasion, TPU is ideal for crafting soft yet sturdy objects such as prosthetics, footwear, and sporting goods. Its ability to withstand oil and food containers makes it suitable for various practical applications. However, beginners may find TPU challenging to work with due to its stretchy nature and tendency to catch in extruder gears. Despite these challenges, TPU offers a plethora of benefits, including high abrasion resistance, vibration dampening, and good chemical resistance. It also comes in a wide range of color and hardness options, ensuring versatility in printing. On the downside, TPU can be difficult to print and post-process, and it's not compatible with Bowden extruders. Understanding the types of TPUs available—polyester-based, polyether-based, and polycaprolactone-based—allows users to select the most suitable variant for their specific application, whether it requires resistance to wet environments, oil, or low-temperature performance with hydrolysis resistance.