Be aware, the weight shown on Wayfair says about 60lbs for the king-size mattress, but it's actually around 63kg (140ish lbs), so you will absolutely need a helping hand with this one! Other than that, this mattress is amazing and seemed to have fully inflated within the first 24 hours. It was replacing a 10ish-year-old mattress that killed my back, so standards were definitely low, but wow the first night on this thing felt amazing. No tossing and turning for the first time in a long time. Absolutely recommend it, and such a great price!