... ,outdoor sport,cycling ect.suitable for promotion gift. 2.It's high quality aluminum,BPA Free. features:1.it iss used ... ,outdoor sport,cycling ect.suitable for promotion gift.2.it's high quality aluminum,strong and durable.3.safe inner coating ... ,B2,B3,C,D,E,F,G,H1,K,L,S,T,X.---different capacity:400/500/600/750/1000ml.