Solve this?|I've Keys But No Locks.I Have Space But No Room.You Can Enter,But You Can’t Go Outside

"Challenge your brain with this clever riddle: 'I have keys but no locks. I have space but no room. You can enter, but you can’t go outside. What am I?' Think you have the answer? Drop your guess in the comments and see if you got it right! Don't forget to like and subscribe for more brain teasers and puzzles. #RiddleChallenge #BrainTeaser #BrainBender"