Allens Swimwear has been supplying male swimmers with swimwear for 50 years as a family-run business since 1976. The jammer is the standard choice for male swimmers at every level - from early morning club training to the competition pool. We are an authorised UK stockist for every jammer brand we sell: Arena, Speedo, TYR, Funky Trunks and more. That means every product is authentic and supplied through authorised channels. Fitted from waist to knee, jammers reduce drag without restricting the kick, and chlorine-resistant fabrics mean a good training jammer holds its shape session after session. For racing, bonded seams and compression fabrics take that further, reducing water resistance and supporting the muscles through a race. Jammers are an essential part of men's swimwear kits. Brand size guides are available on site, and our team is available to help you to find your perfect-fitting jammer. If you have any queries about jammers, you can visit us in person at our store in Dordon, Tamworth. Free UK delivery on orders over £40.