DURABLE MATERIAL: This portable lock is made of 304 strong stainless steel, possess high hardness, strong bearing capacity, strong strength, not easy to bend or deform, the surface after technical treatment, feel smooth, can withstand the impact of high weight, to ensure your travel safety and longer service life EASY TO USE: This is an easy to install prevent theft lock device that require no tools to install and can be quickly installed independently by girls. Others cannot open your door outside without your consent, to provide you with better security outside PROTECT SECURITY AND PRIVACY: This portable lock provide you with extra security and privacy to avoid unauthorized entry into your room. When you install the lock, even if you have a key, you can only open the door unilaterally from the inside. When you travel and live alone, you don't have to worry about intruders COMPACT AND PORTABLE: The palm sized lock can easily fit in the palm of your hand and the detachable design