Here is the description for the "Magic" brand of sizing:
Makes ironing easier. Light body without stiffness. New look. Same great formula. Magic Makes It Easy: Speeds ironing; Quickly removes wrinkles; Leave a fresh, smooth appearance; Fresh linen scent. Magic Sizing restores original body to all washable fabrics. Use it to eliminate wrinkles on synthetics, blends, cottons and knits. Ideal for shirts, pants, wrinkle free fabrics and casual clothes. Contains no CFC s which deplete the ozone layer. Made in the USA.
Yes -- this can be purchased at Wal-Mart.