Soft Climbers. The test records images of blood flow through the body using a special nuclear camera. Soft water is easier to lather with than hard water is. Ecr4kids softzone single tunnel climber, toddler climber for safe active play, soft indoor obstacle course . The onset of soft muscles can be a symptom of many possible diseases, as explained on right diagnosis from healthgrades. Chemically, the difference between the two is that hard water contains calcium and magnesium ions, while soft water does not. Shop wayfair for the best soft play and gross motor play products. See more ideas about soft play, childrens, soft.