Thank you for viewing. We do not accept claims or returns after purchase to prevent switching of items. Many existing auxiliary locks require installation using tools such as screwdrivers to tighten screws. This can be somewhat troublesome or difficult for the elderly or those who do not have tools at home. With LEGLOCK, you can easily install it by simply sticking it to the desired location with double-sided tape. It comes in a set of 4, in ivory color, and can be used as a simple lock in various places. ・Guard against falls of young children while ventilating in hot weather! ・Guard against escapes while ventilating for heatstroke prevention for your precious pets! ・Strongly guard against intruders with a new wedge lock mechanism! ・You can quickly go to the convenience store while locking the window open! ・Elderly people can easily lock it with one touch! ・Size can be easily adjusted with a cutter or scissors! ・If you stick the extra plate nearby, it becomes a holder when open. Comes with 4 "Security Door Double Lock Active" stickers. Multiple sets can be accepted up to 3 sets. Please note that the price will be adjusted to include shipping costs for multiple sets. Please inquire in the comments. Thank you. We request payment within 3 days (excluding weekends and holidays) after purchase. If payment cannot be confirmed, the purchase will be canceled. We may refuse purchases from new users or those with negative feedback. We ask that you always contact us upon arrival of the product. We ask that you only purchase if you understand the above items.