You will see a lot of people immediately answer this question with a definitive no. Yet, that is not necessarily true. See, night splints could be used during the day but not in the way you may think. If you want to take a daytime nap or are simply lying on a couch, they could still be used to stretch your plantar fascia. However, night splints are not designed to be used as a walking splint. Sometimes, as was addressed earlier, design implementations will be made to allow you to walk with them on. But, this is only when you need to get up in the middle of the night or walk a short distance. As a walking splint, though, these will not only be uncomfortable but probably not durable enough. If you are interested in a splint that does accommodate that type of functionality, you may want to look into day wraps.