Recently purchased this product because every Great Value vacuum bag I purchased leaked. Every one. I bought your package of 3 Large (Heavy Duty) bags. Filled it up, sealed it, vacuumed it as so far it has stayed sealed. Will only be purchasing this type of products from Hefty. Sk# 0 259477****. Bought from Walmart store located at: 350 Park Ridge Rd, Sullivan Mo. 63080. Thank you very much. User's recommendation: Good product.