The Spectra Tubing is to be used as a replacement for your Spectra S1, S2, S3 and 9 Plus Breast Pumps. Spectra Baby USA is a top leading breast pump company offering moms the latest innovative breast pumps and supplies. Spectra Baby USA is a team of lactation consultants and pumping mamas that take this journey very seriously. They want to help provide moms all around the world access to a good quality pump to provide breast milk for their babies.