A great and less expensive alternative to Tyvek124 is our Tuff-Gard Polyspun protective coveralls with "Elastic Hood, Ankles and Wrists". (Sometimes they come with built-in booties).
Choose the size that's right for you: Extra-Large, Large, Medium, Small and Children's size XXS
Soft yet durable keeping the worker cool, comfortable and mobile 
APPLICATIONS: Manufacturing, Food Service, Industrial, Medical, Clean Room, Pharmaceutical 
Inexpensive so buy bulk. 
Please note, size Medium is currently with a collar and no hood