SwimOutlet.com, the internet’s hottest swim shop, is celebrating summer! Everyone is looking to get in shape and feel their best for the beach or pool. Partnering with the STRONGMom app, the company is launching its first-ever 21-Day Summer Shape-Up Challenge with the chance to win a 3-day vacation in Cabo San Lucas, Mexico courtesy of CaboVillas.com. To play and enter, contestants can sign-up online to receive daily emails with workouts, fitness tips, meal plans and more. Additional prizes may include fashion swimwear, fitness gear and more. To enter, go to www.swimoutlet.com/summerchallenge