They lock pretty solidly in place, and snap on/off well. If you are a mac user, dont hesitate, but just know that if you have USB-C ports, you will have to buy a USB-C to USB adapter to make this work :) Theres virtually zero absorbency. This is my 2nd pair of these particular style of Crocs. Initially, I was going to review the quality of the product exceptionally, even though my order didnt arrive on time (I am a prime member), but then the second time that my niece wore these shoes the sole started to detach from the bottom of one of the shoes. Je suis vraiment satisfait de ce mondel. ANC is good for the price, it is not as good as high end headphones but it does the job. Rounding up to 4. Love the battery meter in the charging case. they have NO sole support.