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DynaSoft 340 v1. Cow suede, hook-and-loop, no laces. U3401F5 Quicksand/Black. U3407PB Pumpernickel/Black. ¥10,890. On sale from 7 October.
The page at Billy’s is a walking shoe, not a runner. New Balance calls it the DynaSoft 340 v1. U3401F5 is Quicksand/Black. U3407PB is Pumpernickel/Black. Both are ¥10,890 with tax. Reservations opened 1 October 2026 at 15:00 and closed 6 October at 23:59. Shipping is noted from 8 October. The sale line on the page is 7 October, 0:00. U34072H is the third code in the brief, listed at the same ¥10,890 on another shop. That page does not print a color next to 72H.
The upper is cow suede across the whole shoe, taken from the archive Trail 550. Closure is a hook-and-loop strap. There is no lace row. The midsole is DynaSoft. The outsole is Ndurance rubber with a Walking Strike Path. The material line reads natural leather, cowhide. Origin is Vietnam.
Signal. What happened: the DynaSoft 340 v1 went on sale in Japan in three codes, two of them named. Exact product: U3401F5 Quicksand/Black, U3407PB Pumpernickel/Black, U34072H. When and where: Billy’s, sale from 7 October 2026, ¥10,890. Source: Billy’s product pages. Why it matters: a Trail 550 suede upper on a strap walking shoe, built for a commute rather than a draw.


stir
New Balance began in Boston in 1906. William J. Riley was making arch supports and orthopedic fittings before the company made a running shoe. The numbered runners came much later. The Trail 550 sits in the walking and light-trail archive: a suede upper, a round toe, a low collar, a shape meant to be worn down rather than raced. The 340 v1 takes that upper and removes the laces. A wide strap crosses the instep and closes on hook-and-loop. The shop text calls the result a slip-on with a soft, rebounding midsole.
Cow suede is the whole upper, not a mudguard over mesh. That is why the tint names do the work. Quicksand is the light pair, a sandy suede with black as the second color. Pumpernickel is the dark brown, again with black. On a full-suede shoe the second tint usually lands on the strap, the foxing, or the outsole wedge. The pages name the pairs. They do not diagram the panels. A 4E wide is listed on other shops for the 7PB. Women’s sizing is linked from at least one product page. The Billy’s sheet itself is the unisex walking shoe at ¥10,890.
DynaSoft is the foam name at this tier. The product text describes rebound and durable, not a race compound. Ndurance is the outsole rubber New Balance uses when the shoe is expected to be walked in daily. Walking Strike Path is the groove under the foot, described as support for a natural stride. There is no visible Air unit and no plate. The stack is a walking wedge under an archive upper.
third
U34072H shares the model name and the ¥10,890 price. It does not share a printed color on the page that listed it. The brief groups the three codes as Quicksand, Black, and Pumpernickel. Billy’s assigns Quicksand/Black to 1F5 and Pumpernickel/Black to 7PB. Both already use black as the second word. Calling 72H the black pair would be a guess. It stays a code until a shop prints the name.
No limited count appears on the Billy’s pages. Reservation windows on a walking shoe are a stock tool, not a collide draw. The clock is Japan retail: open 1 October at 15:00, close 6 October at 23:59, ship from 8 October, sale marked 7 October at midnight. That is not a global launch hour.
fin
The copy on the page is commute, travel, a shoe that goes on without a lace. The Trail 550 reference is the reason it does not look like a clog. Suede, a round toe, a strap where the eyelets would have been. Vietnam on the origin line. Cowhide on the material line. ¥10,890 on both named colors.
The object is that upper, closed with a strap, on a DynaSoft wedge. Quicksand and pumpernickel are the two tint with names. 72H is the third code in the set. The sale date on the page is 7 October.


