Aleeda A-Line 2/2MM Short Sleeve Spring Suit - The A-line series maintains its no-nonsense style, with super light, flexible nylon neoprene throughout the body and 20% super stretch neoprene in all the key areas for maximum flexibility. All A-line springsuits are 2mm in the body and 2mm in the arms, with a breathable, durable, flatlock seams, and ykk zipper.