By default, ItemSearch only returns parent variations.

For example, when you add Variations to the preceding request, the response includes, in addition to what is shown, variations and their offers, as shown in the following response snippet.

<Offer>
  ...
  <OfferListing>
    <OfferListingId>4L2h0ymPZs3lDap8fU9Kw8hmKiPs5qVknFiifrviXAkRDZivZpZsSfTe0YMLtbo6MVWHTCzyKjT9UZI%2BpvF8Ax%2BFeSG29QGqQ4eF6ZspRD5fdxj8zmRp%2Bw%3D%3D</OfferListingId>
...
</Offer>
<Offer>
  ...
    <OfferListing>     <OfferListingId>PCOIjALkrkCts8UYi3pqf%2BqBaH5xbmJfikoaB5fNhlF7yRMeh19NJxBEBBNz9GDFMMYtH0EI06Y1Vbar7raOf6ieUnzzST94RN8wwiXpEn2jaWmZ%2F%2BYc7Q%3D%3D</OfferListingId>

Each of these offers is associated with an Item element and each of these items is a variation. The following snippet, which comes from the same response, shows how each variation is differentiated by size.

<Item>
  <ItemAttributes>
    <Brand>Eddie Bauer</Brand>
    ...
  </ItemAttributes>
  <VariationAttributes>
    <VariationAttribute>
      <Name>ClothingSize</Name>
      <Value>Small Regular<Value>
    </VariationAttribute>
    <VariationAttribute>
      <Name>ClothingSize</Name>
      <Value>Medium Regular</Value>
    </VariationAttribute>
    <VariationAttribute>
      <Name>ClothingSize</Name>
      <Value>Large Regular<Value>
    </VariationAttribute>
    <VariationAttribute>
      <Name>ClothingSize</Name>
      <Value>X-Large Regular<Value>
    </VariationAttribute>
  </VariationAttributes>
  ...
</Item>

<Item>
  <ASIN>B0008G23PQ</ASIN>
  <Variations>
  <VariationDimensions>
    <VariationDimension>ClothingSize</VariationDimension>
    <VariationDimension>Color</VariationDimension>
  </VariationDimensions>
<Item>
  <ASIN>B0008EOA9U</ASIN>
  <VariationAttributes>
    <VariationAttribute>
      <Name>Color</Name>
      <Value>Grey<Value>
    </VariationAttribute>
    <VariationAttribute>
      <Name>ClothingSize</Name>
      <Value>29W x 30L</Value>
    </VariationAttribute>
  </VariationAttributes>
</Item>
<Item>
  <ASIN>B0008EO9J6</ASIN>
  <VariationAttributes>
    <VariationAttribute>
      <Name>Color</Name>
      <Value>Navy<Value>
    </VariationAttribute>
    <VariationAttribute>
      <Name>ClothingSize</Name>
      <Value>29W x 30L</Value>
    </VariationAttribute>
  </VariationAttributes>

</Item>