Maria ~ Other instructors have suggested substituting pillows, rolled up blanket, rolled up yoga mat, and/or yoga blocks - depending on which exercise you are wanting to do and what works best with your body. The baby arc is product that Balanced Body carries, and I believe they ship internationally if you are interested in obtaining one.
Thank you Maria Wheeler and Meredith! I will follow up on all your suggestions. Thought you might like to know that I just finished a six week trip around the world (business mostly but also pleasure) and I took all of you around the world with me. If I did not have much time I would sneak in a 20 min. class after the day was finished. Now if I could only figure out how to do a Pilates mat class on the airplane! Thanks again to all of you for enriching my life. Maria