Icebreaker Merino 150 Siren Bra w/ Inserts - Women's Black Medium. Specifications for Icebreaker Merino 150 Siren Bra w/ Inserts - Women's: Manufacturer: Icebreaker Apparel Fit: Slim Application: All Purpose Gender: Female Fabric/Material: 83percent Merino Wool 12percent Nylon 5percent Lycra Weight: 28.34 oz Features of Icebreaker Merino 150 Siren Bra w/ Inserts - Women's Merino Corespun - merino blend regulates body temperature in all weather conditions Flatlock seams to help reduce friction Low support Adjustable straps Removable Cups Package Contents: Icebreaker Merino 150 Siren Bra w/ Inserts - Women's Icebreaker IB104708001M: Merino 150 Siren Bra w/ Inserts - Women's Black Medium