Old Navy Rashguard Long-Sleeve One-Piece Swimsuit If you're looking for something a little more covered, go with this Old Navy Rashguard Long-Sleeve One-Piece Swimsuit ($40, originally $50). It's also a great option if you want to play in the waves. Image Source: oldnavy.gap.com Old Navy Rashguard Long-Sleeve One-Piece Swimsuit $40 from oldnavy.gap.com Buy Now