We don’t use the lock feature. My 5 yr old loves her board! She will draw on it for hours! She’ll draw something, then bring it to me and show me. She loves erasing it in front of me before I can ask questions about what she drew. Ours didn’t come with a strap for the pen (our old ones did), so she just has to be vigilant with putting it in the holder.Great products. Easy to draw and erase button works great. Wish it came with a string to hold the pen so my child wouldn’t lose it in the car, but I can always add oneIts a good product and keeps kids from writing on wallsBought two for a friends 3 & 5 year old boys. They love them. Work great.Great product, just as described.It’s fun and easy to use thanks!!My daughter loves this tablet. It is fun and easy for her to use. She loves the magenta color. The pen is a little hard to remove from the holder but at least I know it won't fall out hahThis was a wonderful drawing pad for my kids as we went on vacation. They used them in a car, plane, train, bus, and cruise boat. I would not advise in a regular boat for obvious reasons but was very easy and great for all the traveling we did. Also the lock allowed it to stay clear without smudges. The battery is still working after a month, so we will see how long it will last. I was glad I got one for my kids!It was a birthday gift from my daughter to her sister. It is very nice product and kids liked it. Kids can bring out their creativity and obvious diversion from mobile phones.