They are very safe. Among the best duffle bags I’ve seen, the buyers are protected by warranty. The quality of the bag makes it secure for everything packed. Strong adhesive materials are used to keep the bag firm. Being a durable bag you can always count on it. Even though the bag offers good security, you should opt to add extra lock security. Use safety locks to close up the two zips on the big part of the bag. This keeps the bags secure from strangers who might want to tamper with your goods on the streets or the airport.