Material: ABS (smooth surface, very strong); Size: 23CM * 25CM * 5.5CM Multi-mode: Four modes to adjust, Mode1: Red button on the right. Blue button on the left, (access + exit) allows. Mode2: Red button on the left. Blue button on the left, (access + exit) prohibited. Mode3: Red button on the left. Blue button on the right, access allowed + exit prohibited. Mode4: Red button on the right. Blue button on the right, access prohibited + exit permitted. Wide application: Suitable for most cats and doors With lock: With lock, when not in use, you can lock it, safe to use Good thermal insulation: No air passage after closing, good thermal insulation 4-way locking: only, locked, extended only, unlocked This door is suitable for most cats and small animals No more jumping on the doorknob, no more scratching the door and barking to say it wants to go out! The locked door protects your home from stray dogs or cats when you are not at home