What not to wear, D.C. public pools edition. (Via D.C. Department of Parks and Recreation)

Speedos, tankinis, trunks, and two-pieces? That’s fine attire if you want to take a dip in any of D.C.’s two dozen public swimming pool. But don’t even think about diving in while wearing tube socks, sports bras, compression shorts, or jorts.

The Department of Parks and Recreation says that anybody who tries to get in pool while wearing those items, or several other articles of “street clothes,” will be booted from the facilities immediately. The agency sent out an advisory Monday instructing swimmers to maintain “proper attire” from the second they step onto the pool deck.

The list of banned garb includes “Brazil/French-cut, thong style and/or revealing swim wear, cut-off jeans, jeans, skirts, shorts, sport bras, leotards, leggings, dri-fit wear, compression shorts, and compression shirts.” Underwear worn underneath swimsuits is also prohibited, and any infants wading in must wear swimmer diapers and proper swimwear.

As for what constitutes acceptable “deck wear,” DPR advises T-shirts, flip-flops, and sarongs. And cotton T-shirts are expected to be clean, and preferably not cotton, as cotton clothing can transmit airborne and potentially water-borne contaminants into pools, the advisory reads. Dyes on cotton shirts also have the potential to bleed into the water.

A DRP spokesman tells District of DeBonis that there hasn’t been any particular complaints about street clothing being worn at the pools, but by a preponderance of questions for guidance from the department’s lifeguards.

Acceptable attire. (Via D.C. Department of Parks and Recreation)