Tome of Beasts 2 Lairs (5E) - Rules of Play says:
Created for the 5th Edition of the world’s first roleplaying game, these 14 standalone, single-map adventures each feature new monsters from Kobold Press’s Tome of Beasts II. Use these adventures as side missions alongside your ongoing campaign, or to fuel one or more standalone sessions. With adventures suitable for heroes of level 1–15, there are enough challenges—and mayhem—for everyone!